Gen 5 Sensors (SU-5E) FAQs


What are the best sensor mounting options for areas with no ceiling grid, such as, open office and hard lid? 

The Enlighted Hard Ceiling Mount Carrier is a flexible mounting solution for the following sensors:

Additionally, the following are some examples of ceiling mounting sensors.  

J-box dropped from an open ceiling


Sensor mount case in slats


Do you have pictures of the different ways your sensor is mounted?

Sensor installation guides let you know how the sensors can be mounted. Some specific mounting solutions (like CASE-SU-5E SU-5E Mounting Case Installation Guide) have their own install guides. 

Can we place the sensor in between a PMMA (methacrylate) panel and people?

No. The sensor should not be placed behind any plastic or glass material. The PIR (Passive Infrared) signal will not pass through those materials, and the sensor will be unable to detect motion.

How high can you install your sensors? 

SU-5E sensors can be installed at heights up to 15 feet. SU-5S High Bay sensors have a maximum height of 40 feet. Refer to the Sensor Spec Sheets.

Is there a line diagram for the Gen 5 2-wire sensor (SU-5E-FL) fixtureless sensor installation drawings?  

Refer to the Line Diagram - Sensor Grid - w-BZ-50 Power Pack.

Are the Gen 5 sensors Plenum rated?

Only the Micro sensor, 8-pin, (SU-5E-01), Low Bay Ruggedized Micro sensor, (SU-5E-LR) and Surface Sensor, USB, (SU-5i-USB) are plenum rated.

High Bay/Ruggedized Sensors (SU-5S-H, SU-5S-xRx) FAQs


Do we have a wall mount option for High Bay sensors? 

The Adjustable Mounting Bracket (BRKT-SU) is available as a wall-mount for the High Bay sensor. Adjustable Mounting Bracket: BRKT-SU. Refer to the High Bay Sensor Installation Guide. Ensure that the sensor coverage is adequate for the specific use-case.  Refer to the Spec Sheet.

Does the High Bay Sensor, 2-wire, (SU-5S-2W-H) get powered from the power supply or Phillips SR drivers?

The High Bay, 2-wire sensor can get power from the Phillips SR Drivers. There are many other compatible 2-wire drivers and external Power Supply Unit (PSUs) listed in the IoT Ready 2-wire Sensor Compatible (DALI) Drivers article. Some drivers require an external power supply for the sensor, depending on the built-in PSU. 

When the High Bay Sensor is mounted at 65’-70’, is it possible to dim the fixture since 50' is the recommended mounting height?

The 50’ mounting height relates to the PIR motion detector range, not the radio RF range.

If mounted at higher mounting heights, the PIR will have less sensitivity on the ground (because it is further away) and might not detect motion below the fixture.
The radio range is subject to many variables. The Enlighted ‘open field’ “Line of sight (LOS)” range is greater than 150’, however that can be decreased based on other objects that are near the LOS path which can cause interference due to ‘multipath’ reflections. Further, for the radios, the path is sensor to sensor, not sensor to ground, so the fixture spacing and distance from the sensor to the gateway is the key factor, and not the mounting height.

What is the maximum operating temperature of the sensor?

  • Maximum operating temperature is found in the sensor's specification sheet.  For ruggedized sensors the operating temperature range is -31 to 185 degrees Fahrenheit /-35 to 85 degrees Centigrade. See Ruggedized Sensor (SU-5S) Spec Sheet for details.

Can I paint the housing of the High Bay sensor (SU-4S/SU-5S), Ruggedized sensor (SU-4S-HRW, SU-5S-HRW)?

  • Yes, follow the process below:

    1. Mask the lens.
    2. Use an anti-static air gun to remove any static electricity that may be present.
    3. Use an alcohol wipe to clean the surface to be painted.
    4. Use a polyurethane-based primer on the cleaned surface.
    5. Use any acrylic-based paint for the desired color.

Is the Ruggedized Sensor, 2-wire, (SU-5S-2W-HRW) waterproof?

What are the default dim settings for the Ruggedized sensors?

Ruggedized SU5 sensors shipped with firmware v5.0.20 have 65% as the default light setting. For more information, refer to the following articles.

Sensor (SU-5E) Hardware FAQs


Connected Lighting  and IoT have different part numbers for the same sensor. Can a customer buy upgrade to IoT without changing the actual "sensor"?

Customers can order sensors and upgrade later to IoT. The hardware is compatible, but the licensing should be uploaded in Manage to allow an upgrade.  

Do you assign unique MAC addresses to the sensors based on a block assigned to your company by the IEEE-SA?

Yes, Enlighted has its own block of MAC addresses that it assigns to sensors.

Do your sensors support a secure/verified boot process based on key signatures?

Yes, secure boot is supported.  The code is AES-128 encrypted, and the image is decrypted in the memory at runtime.

Provide details on any hardware security in your sensors. 

The sensors support the AES-128 hardware security engine and secure memory on the RISC processor.

How many sensors can be connected to each control unit?

Only one sensor can be connected directly to a Control Unit (CU) to read energy data and control the lighting. A cable splitter (CBL-CS-RJ45) can be used to power two sensors from a single CU. In this case, the second sensor is fixtureless and does no lighting control. Its only purpose is to provide motion and BLE data to Enlighted applications.

How many fixtures can be connected to one sensor/control unit?

Two factors limit the number of fixtures connected to a single sensor and control unit (CU). The first is the total in-rush current for all the LED drivers attached to the sensor. This must not exceed the rating of the CU. The second is the maximum current the sensor can source and sink on the 0-10V analog control lines. Across all drivers, the total source/sink current must not exceed 10mA. In general, Enlighted recommends no more than five 0-10V drivers per sensor; however, the maximum number of drivers depends on the driver specification.

Why do we need one sensor per light, and why is it that two sensors cannot be adequate for six lights. Please advise.

Enlighted’s lighting control system requires sensors on a one-to-one basis with the fixtures. The primary reason for this is that maximum flexibility in fixture grouping is achieved as well as the sensor density is matched with typical fixture spacing, enabling advanced applications such as location services. The general exceptions are:

  • Continuous linear fixture runs for corridors where all the sensors are part of the same motion group - in this case, we can sometimes eliminate the one-to-one requirement (if the sensor density is sufficient so as not to compromise other services).
  • Dense grouping of downlights where a single sensor is placed in between the group of fixtures and adequate sensor density is maintained.

However,  Enlighted will need the ceiling plan showing the fixture layout to make a decision.

Why can't I move a (programmed) sensor and make it "work" in the new area?    

Sensors are assigned to a gateway and a location on a floor plan in Manage based on every sensor's unique ID. When a sensor is moved, the new location and gateway assignment needs to be set in Manage for it to work properly. See Changing Sensors to a Different Gateway.  

Why do I need to tell you when we replace a sensor? Shouldn't it just work?

Sensors are assigned to a gateway and a location on a floor plan in Manage based on a unique ID for every sensor. When a sensor is replaced, this new sensor needs to be commissioned in Manage for it to work properly. See Commissioning Sensors

Why do the lights and sensors need to be 1 to 1?      

This is not exactly true. A Sensor and Control Unit can control multiple LED drivers. These drivers could be across multiple fixtures (like recessed can light) provided they do not exceed the sensor's source/sink current limits.

Do you have longer sensor cables?  

RJ45 cables can be extended at least 300 feet using RJ45 couplers (CPL-RJ45) and standard CAT 5/6 network cables. See Cabling Guide for connecting CU-4E-FM with SU-4 and SU-5 family of Sensors.

Can we relocate/reuse sensors that are in use? 

When sensors are moved or reused, they need to be configured in Manage.

What is the warranty for Gen 5 sensors?

5 Years.

Are Enlighted products iBeacon compatible?  

Yes, for beaconing. Refer to the article Bluetooth Low Energy-BLE Capabilities. For scanning, we can process our proprietary format for system performance reasons.


Surface Sensor (SU-5i-USB) FAQs


Does the Surface Sensor, USB, (SU-5i-USB) require the 3-foot sensor cable from the sensor to the USB adapter (CBL-5E-USB-3F)? 

The Surface Sensor uses any USB-A to micro USB-B or micro USB-A connector cable up to 8 m/26.2 ft in length. Refer to the article Surface Sensor (SU-5i-USB) Spec Sheet and Install Guide.

Does the under desk sensor have temperature capability like the regular sensor (in the light fixtures)?

The sensor has all the capabilities of other sensors and the only thing that makes the sensor a "desk sensor" is the mounting bracket and sensor mask to limit the sensor range.

Can the Surface Sensor be powered to a controlled receptacle?

No. Power the Surface Sensor only to an uncontrolled receptacle that continuously supplies power. Do not connect it to a controlled receptacle.  

Can we get desk occupancy from the Surface sensor via BACnet?

No. The Surface Sensor Desk occupancy information cannot be fetched via BACnet.  

Recommended articles:

Two-wire Sensors (KIT-SU-5E-D, SU-5S-2W-H, SU-5S-2W-xRx) FAQs


Gen 4 Sensors

Can you briefly explain what 2-wire (KIT-SU-5E-D, SU-5S-2W), SR, or DALI mean?

The following Enlighted 2-wire driver compatibility sensors easily connect to compatible LED drivers,
simplifying installation, reducing wiring errors, and providing plug-and-play capabilities.

  • 2-Wire Micro Sensor Kit (KIT-SU-5E-D)
  • 2-Wire Ruggedized Sensor (SU-5S-2W-HRW)
  • 2-Wire Surface Mount Sensor (SU-5S-2W-H)

The two wires from the sensors provide BOTH power supply to the sensor and a digital communications path between the sensor and connected drivers.  These sensors do not need any additional cables connected to the drivers, unlike the Gen 5 Enlighted 8-pin sensors.

DALI stands for “Digital Addressable Lighting Interface”. By supporting a subset of the DALI commands, the Enlighted sensors can communicate with the drivers to dim or turn off and read energy usage for drivers with this capability.

Compatible LED drivers include DALI drivers with an external or integrated Power Supply Unit (PSU). See 2-wire Sensor Compatible (DALI) Driver List (Feb. 4, 2020). The Signal Ready 'SR' and DEXAL interface provides power and enables data exchange between the sensors and the luminaire.  The two-wire bus can also be used to communicate with Tunable White (TW) drivers (also referred to as DALI Type 8 or DT8) to simplify the wiring and control of TW fixtures.

When using the 2-wire Micro sensor to wire to a 0-10V driver with a Philips SR ready bridge, the 2-wires on the sensor do not indicate which port is for SR+ and SR-. Which port on the 2-wire sensor should be used? Will it damage the sensor if plugged into the wrong wire?

The 2-wire sensors (KIT-SU-5E-D and SU-5S-2W-xxx) are all polarity insensitive, which means no positive or negative polarity on the 2-wire sensors. The DALI bus wires (SR+ and SR-) can be connected to either sensor terminal without polarity.  The customer does not have to worry about damaging the sensor or the SR bridge.

If there were two or more SR drivers (with built-in PSUs), then the polarity of the SR driver connections to each other would matter. SR+ would need to connect to SR+, and SR- would need to connect to SR-.  Again, the connection to the senor will not matter. 

What are the compatible drivers for 347VAC application with 2-wire SU-5 sensors?

Refer to the Canadian Wiring 347 VAC Solutions.

What are the drivers available to meet various luminaire wattage requirements for 2-wire sensors?

Refer to the DALI 2-wire driver list.

What is the voltage and power consumption for 2-wire sensors?

Voltage: 9.5-22.5V (as specified by DALI)

Power Consumption: 180mW (max)

Will the 2-wire sensor work with a ULT PWX driver?

No, the ULT PWX driver is a 0-10v dimming driver with aux power for sensors. A 2-wire sensor puts Power and Data on the same two wires and does not have a separate dimming control line.

Can we use the Micro Sensor with 2-wire Adaptor (KIT-SU-5E-D) sensor as the control for up to 6 fixtures with the Signify SR driver?

You can use a maximum of up to four SR drivers with one Micro Sensor in conjunction with the 2-wire adapter (CBL-5E-D-3N), which is part of the KIT-SU-5E-D.

What is the ratio between a SU-5E Micro sensor to SR Driver? Is it 1 to 1, or can multiple sensors run on one SR driver? 

You can use a maximum of up to four SR drivers with one Micro sensor (SU-5E) sensor. The driver manufacturers set a limit of four drivers. Refer to SU-5 (2-wire) with Sensor Ready Driver and LED Array (03068-01) article. Refer to the list of IoT Ready 2-wire Sensor Compatible DALI Drivers. By the end of 2020, a single sensor will be possible to support up to 8 SR drivers by using FW version 5.11 or later. However, the PSUs of some of the drivers will need to be disabled (so that no more than 4 PSUs are enabled).

Gen 4 Sensors 

Can SU4 2-wire sensors/CU3 be upgraded to pull the occupancy API out of them?

The SU4 2-wire sensors do support occupancy API. All these sensors have PIR hardware on them for occupancy. It doesn’t matter how the sensors are connected to the light fixture. The sensors will still capture and send data if there is an appropriate Gateway and Manage installed.

Why are the Gen 4: Two-wire Fixture Mount sensors FS-D22 Rev.13 failing the wiring test? 

FS-D22 Rev 13 (old stock) has FW 3.8.0.  This FW is NOT compatible with Gen 2 Signify SR drivers (identified by a model number ending in “VPT2”).  The symptom of this compatibility issue will be the fixture failing wiring test (Blinking RED sensor LED).  The root cause is that the 3.8.0 FW does not properly identify the Gen 2 driver and will not read power/energy data from the driver.  For units already installed and commissioned, upgrading to FW 5.x will correct the problem.  It would be best to RMA that material for old stock at customers and get them Rev 14 material.  There will not be any problem with Rev 14 material (FW 5.1.34) or any later FW version.


Fixtureless Sensors FAQ

What are Fixtureless sensors?

Fixtureless sensors are not connected to any lighting fixture. The fixtureless sensors increase the sensor density in a facility collecting data and improving the accuracy for Enlighted applications, such as Location Intelligence and Space, for indoor location and mapping for asset tracking and occupancy-based utilization. 

Can Fixtureless Sensors provide motion triggers to lighting? 

Yes. Fixtureless sensors can be used to provide motion triggers as part of a motion group.  

For cove lights or LED Strips in large areas covered by lights and fewer drivers at a greater distance, can you send an ON/OFF command to a Control Unit connected to another sensor that depends on the occupancy status by a fixtureless sensor installed in the vicinity?

Yes. Fixtureless sensors can be used to provide motion triggers as part of a motion group.

How do I order Fixtureless Sensors?

There are three available options for fixtureless sensors, depending on the form factor needed:

  • Micro Sensor:  Order SU-5E plus CBL-5E-PWR-30N.  Note that this solution IS polarity sensitive.
  • Ruggedized Sensor:  Order SU-5S-2W-xRx-FL.  Note that this solution is NOT polarity sensitive.
  • Highbay Sensor: Order SU-5S-2W-H-FL. Note that this solution is NOT polarity sensitive.

Refer to the following articles:


Sensor Power Supply Voltage FAQ


What is the voltage/power/current information for Gen 5 sensors?

The Gen 5 sensors are rated for supply voltage between 12 to 30VDC.  If the sensor is not being used to control a dimmable fixture (i.e., the 0-10V dimming lines are not connected), then the supply voltage can be as low as 5V, and the sensor will operate properly. The sensor current is nominally 10mA but can have higher peaks depending on operating mode and connection to dimming drivers.  The sensor nominally consumes 150mW.

Are the Micro sensor and High Bay Sensor compatible with 120V and 240V light fixtures?

The sensor operates on 12 to 30VDC and gets its low voltage power from the Control Unit (CU) or a 0-10V driver with an auxiliary output (Profile 0) or a DALI driver with a Power Supply Unit (PSU). The Enlighted Control Unit is rated for 120 to 277VAC.  Drivers come in various voltage ranges, but 120 to 277VAC ‘universal’ input drivers are very common and cost-effective.  It is the driver that will ultimately determine the fixture voltage compatibility.  Note that for voltages higher than 277VAC, proper selection of a Profile 0 or DALI driver with PSU can enable the use of Enlighted sensors on 347VAC and 480VAC fixtures. Refer to the Control Unit Power Consumption.

How do we power cycle a sensor?

If the sensor is already commissioned, you can reboot the sensor. To reboot a sensor, double-click the required sensor on the floor plan and select Reboot in the Fixture Details window.


If this option is not responsive -OR- if the sensor is not commissioned, try these other options:

  • Power cycle the sensor by briefly:
    • turning off/on the wall switch that controls the fixture


    • unplug/replug the sensor at the fixture if it is accessible, or cycle the circuit breaker that powers the fixture associated with the sensor.

Sensor Wiring Test FAQ

How to validate the wiring test for Gen 5 High Bay and Ruggedized sensors (SU-5S-xxx) assembled with signify SR drivers XI095C275V054VPF1?

The wiring test duration may differ for the 2-wire sensors and 8-pin sensors since it depends on the number and type of drivers connected to a single sensor. However, the sensor LED indications for both are the same.

In general, after the test,

  • Solid GREEN indicates that the wiring test has passed.  
  • Blinking BLUE indicates that it is not possible to determine if the wiring test has passed or failed because there is no energy metering available from the driver. 
  • Blinking RED indicates that the wiring test has been completed with a few exceptions corresponding to a common error state. This could be due to any of the following reasons:
    • The fixture power level is too low, and the power change is too small to be deemed different.
    • In a few fixture designs, a non-dimmable driver is connected. The fixture does not support dimming and needs ON/OFF control from the sensor.
    • The driver power efficiency is low, which rendered the power consumption of total output vs. low dim level output to be both at a high overhead power consumption level, which narrowed down the power consumption differences among the different dimming setting levels, and 
    •  If none of the above, it may be due to wrong wiring, which the fixture manufacturer needs to troubleshoot.

While the test is running, the sensor LED will be solid RED.  The 2-wire driver must support energy metering (note that the Signify SR drivers do meet this requirement).  The wiring test will run for five power cycles, after which it will not run automatically. Instead, on subsequent power cycles, the LED will briefly display a solid RED (for about 5-10 seconds) and then indicate the final wiring test outcome. 

For the Ruggedized sensor, 2-wire, (SU-5S-2W-xRW), there is presently no ability to reset the wiring test power cycle counter in the field without Manage. Instead, commission the sensor in Manage, and then delete it. Deleting the sensor in Manage resets the sensor wiring test counter to 0 so that the sensor is ready for the subsequent five wiring test runs.

The power cycle test runs for the first five power cycles. If a sensor has exceeded the 5-cycle maximum and indicates a non-passing result, the sensor may be RMA’ed for replacement. Suppose it is confirmed that there is no wiring error in the fixture; ship the fixture with the sensor indicating a failed wiring test since the fixture can be successfully commissioned. Re-run the wiring test after the fixture has been installed. 


Recommended article:

Sensor Firmware and Data FAQ



Can your sensors receive automatic over the air updates and provisioning? 

Do sensors have the capability to store/retain any historical/trend data?

  • Yes. Data is stored locally in the sensor's RAM (Random Access Memory) and sent to Manage at regular intervals.

When a sensor loses communication with the gateway, how long can the sensor store the reporting data?

  • The sensor stores data to send every five minutes. Hence, depending on when the communication is broken, the sensor will store data for between 0 and 5 minutes. The exception is energy consumption and savings data that is stored almost indefinitely for multiple years.

How much data does each sensor generate daily?

  • For lighting applications, each sensor generates 37 KB data per day. With the Where IoT application, each sensor generates 11.1 MB data per day maximum, and it depends on the movement of the tags.

What type of user interface do your sensors provide for end-user interaction? 

  • LED indicators on the sensor indicate the status of the device. Refer to the required sensor installation guide in the Sensor Installation Guide section.

How many lighting profiles can I use?

  • You can use up to 255 profiles today. It is on the road map to support over 1000 profiles before July 2019.

Why can’t I discover a sensor when I plug a new one in?

Sensors Communications, Connectivity, and Networking FAQ


Which wireless standards do your sensors support?

  • All Gen-5 (SU-5) sensors support IEEE 802.15.4 and Bluetooth Low Energy (BLE) v4.0

Which wireless control system communications standards does your sensor use at the physical, data link, and network layers?

  • Gen-5 (SU-5) sensors support IEEE 802.15.4 physical and data link communications. The 802.15.4 network layer is proprietary.  

What is the response latency of the sensor?

  • Sensors communicate room control (switch) activity to other sensors in the same switch group in less than 150ms.

Does the sensor network process any confidential data (e.g., individually identifiable data from devices like cameras, microphones, etc.)

  • No personally identifiable information (PII) is processed or stored by the sensor network.

How far can the sensor detect someone?    

  • Detection ranges vary by sensor and ceiling height. For additional information, see Spec Sheets.
Sensor Ceiling Height Fine Motion (Radius) Minor Motion (Radius) Major Motion (Radius)
Micro Sensor 8.5 ft/2.6 m 2.3 ft/0.7 m 8 ft/2.4 m 10 ft/3.0 m
15 ft/4.6 m 4.0 ft/1.2 m 10 ft/3.0 m 18 ft/5.5 m
Smart Sensor 20 ft/6 m 10 ft/3 m 23 ft/7 m 20 ft/6 m
40 ft/12 m 20 ft/6 m 46 ft/14 m 40 ft/12 m
Ruggedized Sensor 12 ft/3.5 m 8 ft/2.5 m 20 ft/6 m 12 ft/3.5 m
40 ft/12 m 20 ft/6 m 46 ft/14 m 40 ft/12 m

What is the light level output of the fixture before programming?

  • Non-commissioned sensors will have a default output of 65% until they are programmed. It may take up to 2 minutes after power-up for the output setting to go to 65%.   

What is the coverage a sensor can handle?

  • Enlighted recommends one sensor every 100 sq ft for indoor office applications.

What is a hopper?  

  • A hopper is used to extend the range between remote sensors and a gateway. It repeats the messages received from any sensor to improve connectivity to the gateway for these remote sensors. Refer to the Network and IT Design Guidance for Hopper guidelines.      

Why are the lights in different colors (orange/bluish/white)?

  • The color is a reflection of the color temperature of the LED fixture. Warmer fixtures are more yellow/orange and have a lower color temperature; cooler fixtures are more blue/white and have a higher color temperature.                      

Why is the sensor LED off?

  • Commissioned sensors will turn their LED off when they do not detect motion. If you move under a commissioned sensor, the green LED should blink; if it does not blink, the sensor may not have power. See LED status descriptions in the corresponding Sensor Installation guide articles. 

What does a red sensor LED mean?         

What does a blue sensor LED mean?       

Why are the lights on the un-commissioned sensors dim?

  • Un-commissioned sensors will set a default light level of 65%. In some fixtures, this may be perceived as too dim.

Why do lights turn on and off when you first power them up?

  • Lights controlled by an un-commissioned sensor may go through a wiring test procedure on start-up that will turn the lights on and off for about 30-40 seconds. Lights controlled by a commissioned sensor should not flicker unless there is a problem with the fixture/driver.

Sensors Network Security FAQ


Do sensors implement certificate/API key-based authentication to access the data through the web services API?

  • No

Does the Enlighted sensor support authentication through the exchange of keys during device provisioning and certificate-based authentication?

  • Yes. During the commissioning of the sensor, keys are transferred between Manage and sensor via a secure channel. Certificate exchange is not provided; only keys are supported.

Do the sensors support TLS encryption on a shared medium networking stack (e.g., Ethernet, WiFi) 

  • Not supported

If your sensors support remote access, what authentication method is supported? 

  • Remote access is only supported via Manage.

How is authentication/access to configuration settings and firmware updates managed? 

  • Configuration settings and firmware updates are managed via a secure channel (using sensor key) to transfer information to the sensor.

Will *all* access credentials be provided and be fully configurable? 

  • Access to sensors is only available through Manage.

How are ‘engineering’ or ‘factory’ credentials managed? 

  • Default factory credentials are removed during the commissioning process.

If your sensors support communication with external servers, can this be fully disabled?   

  • Remote access to sensors from other servers is not supported; remote access is available only through Manage.

If your device uses non-IP wireless technology, how is information exchanged between the network interface (wired or wireless) from the non-IP wireless communications? 

  • The gateway bridges between the proprietary sensor protocol and standard wired Ethernet communication.

Laser Pointers FAQ

Can a red laser pointer be used to commission Gen 5 (SU-5) sensors?

  • The SU-5 sensors support only green laser pointers for commissioning. Previous generation sensors supported other color lasers, but the SU-5 sensors require a green laser. 

Specify which Laser pen/laser pointer devices can be used for commissioning sensors?   

  • Preferably use Class 2 green lasers with ~5mW power and ~405 nm wavelength.

Enlighted recommends

Here is the list of few generic models:

  • 3 Piece Green red Blue Interactive Pen Training Toy cat and Dog, LED Sports Device to Play with a pet, Powered by 2 x AAA Battery (not Included)