With the increasing use of Solar applications in the Out of Home Advertising industry, SmartLink meets the needs to control and monitor the process. For both On-Grid and Off-Grid applications, the SmartLink unit measures the exact energy consumption and production and allows users to monitor and control their lighting. The unit will alert the user about alarms such as loss of power and bulb outages. Control and monitor scheduling through computers and the SmartLink App. Also for Off-Grid applications, the SmartLink unit monitors battery voltage and temperature as well as programmable Low Voltage shutdown capability.