Compact Motion Sensor 12V CRN-5684

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Compact Motion Sensor 12V CRN-5684
Compact Motion Sensor 12V CRN-5684


   CRN-5684 is a compact motion sensor for 12V voltage for applications as a device that triggers controllers when motion of an object is detected. The sensor is cooperating with lighting controllers for stairs. The sensor detects objects emitting infrared (heat) radiation, such as people or animals. The sensor sends a fixed-length pulse (about 5 sec) after motion detection. The pulse has a negative level and can be connected directly to the controller input.

   The sensor has a small, green LED diode that indicates the sensor’s operation. The diode lights up for the pulse time. The diode can be used to mount and adjust the sensor.

   The sensor’s operating voltage is from 5 to 20V and thus it can work without any problems at 12V, which is most often available when powering LED strips.

Motion sensor CRN-5684

   An additional feature of the sensor is the twilight sensor system. The sensitivity of the twilight sensor can be adjusted, and in the extreme position of the control element - completely switched off. Note: Twilight sensor only immobilizes the sensor. When the twilight sensor is switched on, with sufficiently bright lighting, the sensor stops sending pulses to the controller. It does not turn off the controller itself!


Motion sensor CRN-5684

  The motion sensor has two control elements: the sensitivity of the motion sensor and the sensitivity of the twilight sensor. The sensor is supplied with control elements set in the output positions: for the motion sensor it is the maximum sensitivity, and for the twilight sensor the switch-off state (twilight sensor does not work then). The position of the adjustment elements should be carefully changed. In case of problems, please adjust the adjustment elements in the starting position.

Connecting the sensor

Motion sensor CRN-5684

   The sensor has three contacts. Make sure to connect the power supply and controller input with great attention. Misconnection of the power supply or controller input will damage both devices! Plug wires from the controller: + 12V power supply, signal cable connected to the controller input and minus 12V power supply (GND) to the soldered plug. The connection should be made as described on the socket mounted on the sensor. WARNING! Reverse connection of the plug will damage the sensor!

Diagram of sensor connection

Motion sensor CRN-5684

   Connect the sensors to the controller only after checking whether the controller works properly, ie if the animation lights up correctly after pressing the buttons on the housing.  If the controller works incorrectly, we again adjust the setting and possibly the angle of view of the sensors.


Supply Voltage: 5-12V
Power consumption: <10mA
Output (output signal level): high / low: 5V (open collector)
Range: 3-7 meters
Measurement angle:
Pulse time: 5 seconds
Lock Time: 2.5 seconds
Working temperature: -20 - +80 ¬į C
Dimensions: 36mm x 30mm x 25mm

Manual of CRN-5684 motion sensor (in PDF) - DOWNLOAD