This product is applicable to house , the factory, store, storehouse etc,where needs to guard against theft, defend to invade of place.time - lapse annunciator will give an harsh-ness alarm . while postpone 3- 5 seconds.(Turn off alarm in time when customer oneself enter the door. ) it used for gate. annunciator will give an alarm imme -diately ,it used for the window.

      The product's function stable credibility, price cheapness, install convenience, the product was examine by police and was passed by Chinese safe technique center 3 C attestation

Install method: