LMA-G is specially designed to be used with ThinkGrow Model-I and I Plus. The LMA-G needs to be connected with a lighting control adaptor to offer a group control function to the grow lights. Each LMA-G can control one group of lights./ Each light group requires one LMA-G. Features Designed for ThinkGrow Single-bar LED fixtures LCD Display for Group addressing Seamless Connection with Hydro-X Pro and LMT-T Lighting Adaptor with RJ12 Cable Plug & Play Package Contents1x Group Control Adaptor LMA-G Spec: Input Voltage: 12V Maximum Current: 0.1A Working Environment: Temperature 32-122F, Humidity90% Packaging Dimensions: 156mm(L) x 83mm(W) x 30mm(H) Cut Sheet Connection Diagram