***** **********Best Quality Guranteed. *****WIDE RANGE OF APPLICATION(Driveway alert, Perimeter alarm and etc)- The infrared detection range of the solar sensors up to 300 feet, that means the infrared sensing terminals can be mounted up to 300 feet apart; and will send a wireless alarm signal back to the wireless alarm receiver up to 1/2 mile away anytime someone passes between the solar sensors (Actual range will vary depending on the local terrain) *****NO WIRING NO NEED TO REPLACE BATTERIES- The sensors are self-powered by solar recharged lithium ion batteries; no need sunlight, the nature light on cloudy and rainy days also can charge the batteries normally; requires no wiring (both the power cables and signal cables) *****LOWER FALSE ALARM RATE-The use of active and multiple infrared beams reduce false alarms from small animals and small objects such as birds and falling leaves; super infrared penetrating power reduce false alarms from the bad weather such as rain/fog/snow; infrared analy