JC 433MHz Wireless PIR Detector Infrared Motion Sensor for Home Business Alarm System Indoor

I needed a wireless PIR for my study/workshop which is in my garden. My house alarm system is not wireless, so I bought a cheap 433Mhz receiver module with relay output to mount inside the alarm control panel. It works perfectly and the two devices paired without any problems.The sensor is pretty smart, and conserves power by going to sleep for 3 minutes after 4 or more detections have ceased after a 3 minute period. This means that my normal activities in my study will not cause the sensor to waste battery power transmitting every time I move. I am expecting batteries to last a long time as the standby current is only 20 microamps. The ultra-alkaline batteries supplied have a rating of 1,500 mAHr, so in theory they should last 75,000 hours (about 8.5 years). I will be happy if they only last 4 years, which is about half their normal shelf life. When battery voltage is getting low, the sensor flashes its light 3 times periodically and can alert the control panel wirelessly.To sum up - this sensor is just about perfect. It is delightfully small and low cost. I will be buying more to protect the garage, garden shed, and summer-house. The receiver module I bought can handle up to 8 different sensors.

Works great with home assistant

Never use it as the main unit never been fitted.

Using with tasmota sonoff rf bridge to integrate with Hassio. Works brilliantly but seems to be identical to other chinese variants

reasonable product