Microwave motion sensor DRM-07

ApplicationThe motion sensor is used to automatically switch on lighting for a limited time when a person or other object appears in areas such as corridors, courtyards, approach paths and driveways, garages, etc.

The DRM-07 can be used as a presence detector.
The microwave sensor can detect movement through timber panels, plasterboard, glass and plastics.
     

Operation

The DRM-07 active motion sensor emits and receives high-frequency electromagnetic waves at 5.8 GHz. The microwave sensor detects changes in wave reflection caused by the movement of an object within the detection area. The sensor detects movement of an object towards and away from the sensor. Movement within the detection field triggers the lighting to switch on automatically. Once switched on, continuous movement keeps the lighting on. Only the absence of movement within the detection field triggers the lighting hold-time. Renewed movement within the detection field and its cessation
whilst the delay is being counted will reset the delay time to the start. This mode of operation allows the DRM to be used as a presence detector.
After the set time has elapsed, the lighting will switch off automatically. The DRM-07 active motion sensor is equipped with a twilight switch that prevents the controlled lighting from switching on during the day. Detection status and readiness to switch on the lighting are only activated after dusk. The sensor’s activation time can be adjusted by the user using a potentiometer. Additionally, the detection range can be adjusted between 5 and 15 m (for h = 1 to 1.8 m), and the switch-on time for the load can be set between 10 seconds and 12 minutes. The microwave motion sensor is suitable for indoor use. The sensor can detect movement through wooden panels, plasterboard, glass and plastics. Temperature changes do not affect motion detection. The sensor has a switch for selecting the operating mode: permanently on, permanently off and automatic operation.
     

PLEASE NOTE!
The microwave radiation power is relatively low and is completely safe for humans and animals. It is less than 0.2 mW. By way of comparison, a microwave oven and a mobile phone emit radiation at a power of approximately 1000 mW.