... sensing information from sensor units (such as wireless wall switch, window contact, and etc.), ... receiver may connected with 1 control module, and each modules may control 4 channels, so ... 65mm x 65mmMechanical dataFlame Retardant ABS Control Module Technical Data:Max Load< 1000W/channel (Resistive load ... LED, 1 “PC Link” LED, 1 “RXD Radio” LED, 1USB port , 1 Output Selection KnobAntennaExternal ...