Brief introduction This product adopts MCU control and PIR, SMT technology. It gathers sensing, alarming and dialing. When it detect signal, it will alarm immediately and dial number. We hope the product will take security and convenience for your life and work! Technical parameter Main controller: Power:9VDC(power adapter convert)Alarm delay: 2.5Min Standby power: DC9V(chargeable battery)Alarm volume: >90db Working frequency: 433MHzRemote control distance (wide place):>30m Alarm current: 190mASense angle:120? static current: 30mASense distance:9m.max(<24℃) Installing height:2m-2.5m