Features 1Adopt ABS flame retardant shell fireproof antishock corrosion resistance sturdy and durable inbuilt circuit protection to prevent defects such as reverse polarity sparks overcharge overcurrent open circuit short circuit overheating etc. 2Compatible with 12V/24V system. Discharge current 30A built-in industrial microcontroller automatically manage the work of solar panels and batteries in the solar system. Dual USB ports support mobile phone charging. 3Equipped with LCD display which can clearly display the charging status and data and battery status and data. The solar charger can easily switch the mode and parameter configuration. 4In order to protect the battery life once the battery voltage exceeds the range the solar charge controller will automatically shut down. 5Solar charge controller should be connected to the battery first then to the solar panel and finally to the load. LCD display adjustable parameters suitable for household industrial commercial etc. Specification Item Type: Solar Charge ControllerMaterial: ABS Aluminum AlloyRated Charge and Discharge Current: 12V/24V Automatic IdentificationBattery Type: Plumbic Acid (Default) / Colloid: 14.2V/ Opening: 14.6VLoss: -4mV//2V (25)Temperature Compensation Coefficient: <0.25VWorking Temperature and Humidity: <90% No CondensationWeight: Approx. 424g / 14.9oz Package List 1 x Controller1 x User Manual