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Reflective Laser Wireless Photocell Sensor Beam YET611LSR for Sliding Door Garage Door,photocell beam sensor,Reflective photocell sensor,wireless photocell sensor for sliding door,infrar sensor door,door sensors,Reflective Laser Wireless Photocell Beam Sensor For Door,photocell beam sensor , Reflective photocell sensor , wireless photocell sensor for sliding door , infrar sensor door , door sensors,photocell beam sensor can be used for automatic doors and windows, and can be sensed at a distance of 50 meters.,YET866+YET2126 4-Channel Receiver Rolling Shutter Door Motor Controller With 2PCS Remote Control,4 channel receiver,Smart home automation system sliding gate door controlle,gate remote controller,receiver receiver,smart remote controller,universal controller,The Yaoertai gate remote control products door controller are remotely controlled in the cell gate, the farthest distance can reach 150 meters, so that you can operate freely from 100 meters away