1.installation of controller should be stable and dimensions are as follows: overall dimension:104X80X28(MM) Installation hole:3.5(mm) diamete 2.CMWD series controller can work under 12V or 24V voltage,please connerct storage battery at first for use, controller will automatically identify voltage of storage battery and start to work. 3. connecting pole "+" :controller is designed with share positive pole .please connect the positives of storage battery ,photocell and load to the positive plke end (red line) together respectively 4.connecting pole"-"of storage battery:if connection is right ,indicator lamp of controller will twinkle otherwise,please check the connection 5.connecting pole"-"of silar panel:if connection is right,indicator lamp of solar panel will twinkle ,otherwise please check the connection 6.connecting pole"-"of load:connect the wire of load to the load output end of controller,current should not exceed the rated current of controller,wiring diagram is as follws
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