Product description:

       The wireless door sensor is composed of a wireless transmitting module and a magnetic block. There is a "steel reed pipe" component at the two arrows of the wireless transmitting module. When the distance between the magnet and the steel reed pipe is kept within 1.5 cm , The reed pipe is in the disconnected state. Once the distance between the magnet and the reed pipe exceeds 1.5 cm, the reed pipe will close, causing a short circuit. When the alarm indicator is on, an alarm signal will be sent to the host. Wireless transmission distance>500 meters, frequency 315MHz.

Analysis and treatment of common faults:

A. The host cannot receive the alarm signal of the door sensor

(1) Check whether the door sensor IC code is correct

(2) Check the distance between the door sensor and the host

(3) Check whether the battery has electricity or whether the battery button is connected

(4) Check the surrounding environment where the door sensor is installed

(5) Check whether the circuit board of the door sensor is damaged

B. The indicator light of the door sensor does not turn on or stays on for a long time

(1) Check whether the solder joints of the indicator light on the circuit board are loose or fall off

(2) Check the battery level

(3) Check whether the circuit board is damaged