Feature:1. MPPT CHARGING: Wind solar charge controller, using MPPT charging method, power is up to 400W, efficient and durable.2. VOLTAGE IDENTIFICATION: The controller has 12V 24V system automatic identification function, suitable for more equipment requirements.3. BOOSTING CIRCUIT: Using an independent boost circuit to solve the problem of charging efficiency of small power vertical wind turbines.4. APPLICABLE BATTERY: The solar charge controller supports universal lithium acid batteries, with good compatibility and strong practicability.5. COMPACT SIZE: The MPPT charge controller has a compact structure and is equipped with a load resistor for easy installation and operation.Specification:Item Type: Wind Solar Controller Model: JW-MPPT12/24/400Voltage: DC12V 24V (Automatic Identification)Wind Solar Power: 400WHow to Use:After taking out the product, scan the QR of the user manual and follow the instructions.Package List:1 x Wind Solar Controller1 x Load Resistance