Solar-powered Wireless 4-beam Active Infrared Detectors - 100m

Solar-Powered Wireless 4-Beam ActiveInfrared Detectors - 100M 4 Beams with protection distance 100 meters. Wireless transmitting distance up to 3000 meters.Solar power with built-in rechargeble battery, 433mhz.Size - 59×8.4×4.5(cm)
this system can wirelesly transmit 3km. You will need to use the receiver : http://www.bidorbuy.co.za/item/183891177/Wireless_to_wired_output_converter_for_security_system.html The receiver can take 8x sets of beams, and uses 1x wired zone on your alarm system. If you do not have an existing alarm system, you can use our GSM alarm : http://www.bidorbuy.co.za/item/181936848/16_wireless_5_wired_Zone_GSM_alarm_system_kit_with_sms_alert_auto_dialler.html