TP-Link - Intelligent Solar Power Supply System Spec:90W/18V_998*516*30mm Solar Panel; 30Ah/3*12VDC Output Battery, More than 500 cycles; Charging Condition:-20?~45? (With intelligent auxiliary heat); Discharging Condition: -30?~60? (With intelligent auxiliary heat); 1*10/100Mbps RJ45 FEATURE:Load Control\Battery Overtemperature Protection\Battery level display\Generation power display\Load power display\Generation power and Load power Statistics