Feature:1. Single Channel Design: The electronic speed controller is a single channel design, often used in fighting robots.2. Thick Double Side Board: Using 1.6mm thick double sided board, the whole process of spraying tin to ensure the good passage of large and small currents.3. Good Heat Dissipation: The inverter module has a large heat dissipation area, which can better maintain long term operation.4. Wide Working Range: 7V30V wide voltage range, current limit 30A, suitable for various electronic control scenarios.5. Compact Structure: The electronic speed controller module has a compact structure and does not take up space for installation.Specification:Item Type: Electronic Speed ControllerMaterial: PCBLithium Battery: 3S-7SModel: APO-A4Voltage: 7V-30VCurrent Limit: 30AFixed Hole Distance: Length: Approx. 55mm / 2.2inWidth: Approx. 35mm / 1.4in.Package List:1 x Inverter ModuleNote:Do not overload use.