Feature: 1. Dual battery charging reduces the cost of a separate system, PWM charging method, optional charging frequency. 2. With overcharge, overdischarge, electronic short circuit, overload protection and unique anti‑reverse protection. 3. With 8‑pin RJ45 communication port, ‑35℃ to +55℃ working temperature range, 10%‑90%NC humidity. 4. Convenient to use and with good performance, with small size, easy to carry and store. 5. Can be used with peace of mind, with strict quality control and quality assurance. Specification: Item Type: Solar ControllerModel: EPIPDB-COM Material: Plastic Rated System Voltage: 12/24VDC (automatic identification) Voltage Drop of Electric Circuit: ≤0.26V Voltage Drop of Discharge Circuit: ≤0.15V No-load Loss: ≤6mA Battery Type: Open battery, gel battery Self-Loss: 4mA at night, 10mA when charging Communication Port: 8-pin RJ45 Operating Temperature Range: -35℃ to +55℃ Humidity: 10%-90%NC Protection Level: IP30. Package List: 1 x Solar Controller1 x User Manual