Features 1This solar charge controller is great for household power generation system 2Made of high quality ABS material not easy to aging safe and durable constructed with four holes for convenient installation 3When the battery voltage is low the controller will automatically cut off the load from the system 4Safety systems provides overcharge protection short circuit protection overload protection and lightning protection 5The controller will automatically compensate the temperature of the charging voltage according to the changes of ambient temperature Specification Features: This solar charge controller is great for household power generation system. Made of high quality ABS material not easy to aging safe and durable constructed with four holes for convenient installation. Safety systems provides overcharge protection short circuit protection over-load protection and lightning protection. Specifications:Condition: Brand NewMaterial: ABSColor: BlackMaximum Load Current: 30ALength1m Charging Loop Drop: <250mVLength1m Discharge Circuit Drop: <50mVFully Charge Cut-off: 1.37~14.4V / 27.4~28.8V (data under no load condition)Temperature Compensation: -3 mV / / batteryNo Load Loss: 10mV (10A / 15A); 20mV (20A / 30A)Efficiency: 95%~97%Maximum Wire Area: 2.5mm (10A / 15A); 4mm (20A); 6 mm (30 A)Ambient Temperature: -25~55Size(L x W x H): approx. 13.2 x 7 x 3cm / 5.20 x 2.76 x 1.18inchWeight: approx. 135gPackage Included:1 x Solar Charge ControllerWiring Instruction:1. Storage battery + -: the 3rd 4th terminal(from the left)load indicator light flashes once and will light up after 15 seconds which shows correctconnection otherwise it will cause damage to controller.2. Solar panel + -: the 1st 2nd terminal(from the left)3. Load + -: the 5th 6th terminal(from the left)Indicator Light Instruction:1. Charge indicator light: light up showing it's at powerful charging status; flash showing it's atfloating charging status; doesn't light showing that charging is finished.2. Load indicator light: light up showing there is output load can normally work; otherwise theload can't work.Note:2. Rated current of solar panel and load can not more than the rated current of controller(30A).3. Do not directly use solar panel battery to power load.4. Do not use light to charge solar panel because it is insufficient when charging by light bulb. Package List 1 x SolarChargeController