Thông tin sản phẩm ◆Advanced digital signal treating technology ◆SMD technique with excellent resistance to radio frequency ◆Automatic temperature compensation and superior resistance to false alarm ◆Resistance to white light interference ◆Sensitivity adjustable ◆Low voltage detection and alert ◆Wireless transmission of data signal Work voltage DC 3V (2 AAA 1.5V) Current consumption ≤1mA on standby , ≤55mA in alarming Detecting space 12m/120 degrees Installation height 2m~2.5m Installation style Wall-hangling Ambient Temperature -10℃~50℃ Alarm output Wireless output Sending output ≤100m (at open area) Sending frequency 315m(433m optional)