It is much safer,for it alarms once the thief tries to come into the house.
Installed outdoors,not impeding indoor activities,and on duty round the clock.
Solar-powered wireless technology ensures high energy efficiency without any damage to the decoration.
Application of the working principle of the opposite-type infrared detectors to the design helps to settle the problem of false alarm.
Muti-beam design ensures a high rate of protection.
Equipped with the function of self-check and reporting to the host.
Immune to strong light interference,with interference indicating function.
FSK+FHSS signal alarm,made it immune to signal interference and false-reporting.
Adoption of secondary modulated and coded light signal helps to avoid mutual interference among the infrared beams of many pairs of Gratings.

