Double Beam IR Sensor

About this item : Twin infrared beams provide reliable perimeter security, minimizing false alarms from falling leaves, birds, etc Lensed optics reinforces beam strength & provides immunity to false alarms due to weather Unique displacing receiving, transmitting parts with big power, Full function checking, self-adaption in environment and trouble locking. Patented balanced checking, unique digital filtering The transmit power will be adjusted automatically according to the environmental conditions, which greatly extends the life of the launching tube, while lowering power consumption Weatherproof,sunlight-filtering case for indoor & outdoor use,Built-in laser beam alignment system speeds accurate, reliable positioning,An English Usage Manual included in the pack.