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.


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