1MPPT boost charging, breeze low voltage can start, sufficient energy, can solve the problem of slow fan speed can not be charged. 2Compared with the traditional PWM charging controller, it greatly improves the charging capacity and the utilization efficiency of the power generation system. 3IP67 protection grade, this controller is dust-proof, waterproof, oxidation-resistant, durable and wear-resistant. 4Heat conductive silicone is used for filling and sealing, which is waterproof, dust proof and circuit oxidation proof. 5With perfect overcharge protection, reverse connection protection, short circuit protection, high temperature protection and other functions, it is more safe and convenient to use.Condition: 100% Brand New Item Type: Wind Charge Controller Material: Aluminum Alloy Protection Grade: IP67 System Voltage: DC 48V Static Power: 15mA Fan Input Power: 48V 800W Working Temperature: -35 C -70 C Applicable Battery: Lead Acid/Gel Battery Weight: Approx. 274g / 9.7oz Size: Approx. 9.3x8.4x2cm / 3.7x3.3x0.8in LED Indicator Indicating Content Status Function Green Fan Charging IndicationOff 1: Wind not connect,2: No wind On Wind charging Red Fan Brake IndicationOff Controller working On Battery high voltage or high temperature }1 x Wind Charge Controller1 x Instruction Manual1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.