WIDE RANGE OF APPLICATION(Driveway alert,Perimeter alarm and etc)- The infrared detection range of the solar sensors up to 190 feet,that means the infrared sensing terminals can be mounted up to 190 feet apart;and will send a wireless alarm signal back to the wireless alarm receiver up to 1/4 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 analysis technology reduce false alarms from the other nature light sources interference such as sunlight