This Wireless 433Mhz PIR Sensor/ detector used the advanced intelligent signal analyzing and temperature auto compensating,  built-in spring style high frequency antenna, which have the long range rejecting, electricity saving, security & reliable function.

When the Intruder get into the detecting range, the detector will detect the bodily events automatically, and will send the wireless signal to the alarm host, This item can used for security Protecting of the residential area, flats, workshops, shopping mall, warehouse and office building etc...