pretector
Can choose to instal the wireless transmission module
Convenient to use the line collocation .

The function of proof rain fog snow and used outdoors in any weather

tearing proof function if more than 2 beams are sheltered alarm signal will be put out it is  effective to avoid misinformation  high sensitivity AGC circuit design sound and light indication is convenient to installation testing and searching fault. Parameter:1.Light beam:3/5/8