Features The large sealing type radiator is used for the product, and the aluminum mold with the radiator and the outer shell, which has the effect of dissipating heat and preventing dust penetration, and the product of the large level improves the service life of the product. The digital tube displays the charging current, battery voltage and solar input voltage in real time, and the working status is clear at a glance. Efficient charging technology ensures that the solar plates operate in the best conditions, maximize charging and effectively extend battery life. When the battery is reversed, the fuse will jump and the user will replace the fuse of the glass tube 10A, 5×20. The controller adopts LED status light to allow the user to work directly on the current controller. Specification: Item Type: Solar Panel Controller Photovoltaic panel open circuit voltage: 16V ~ 50V MPPT Voltage Range: 16V ~ 45V MPPT efficiency: ≥99% Machine Efficiency: 295% No-load loss: <5mA Solar input power: 18V200W, 36V400W Communication distance: ≥5m Battery: 48V or 60V or 72V (one-button adjustment) Surge protection: 58 V to 48 V, 72 V to 60 V, 87 V to 72 V. Operating temperature: -25℃~+65℃ Package list: 1 x Controller Package List 1 x Controller