Use range: The silent 370 water pump is suitable for installation on a remotely controlled boat that requires water cooling for the water-cooled motor and does not have a suction rudder. The operating voltage of the 370 motor is 3-6V, which can be directly connected to the receiver for power. For 6S (7-28V) battery systems, a 5V step-down module is required to power the pump. Suitable for remotely controlled carriers, warships, battleships, and other vessels that require water cooling for electric motors and ESCs.Connector: JR plug, also known as a servo plug, is suitable for direct connection to standard receivers.Step-down module: Since the pump operates at 3-6V, if power is not drawn from the receiver and the battery used is 2S or higher (2S, 3S, 4S, 5S, 6S), with a voltage range of 7-28V, a step-down module is required to reduce the voltage to 5V for the water pump.Switch: A switch can be added between the pump and the power source. Turn on the switch when the pump is in use, and turn it off when not needed.Water pump performance test: After testing, the pump operates continuously for 15 hours at 5V. The pump may become warm during extended use, which is within normal operating range and does not affect performance.Pump specifications: - Pump head outlet diameter: 3.95mm - Center hole: water outlet - Eccentric hole: water inlet - Rated voltage: 6V, operating voltage: 3-6V - At 3V: Flow rate 1.1L/min (300ml per 10 seconds) - At 6V: Flow rate 1.8L/min (600ml per 10 seconds) - Pump size: 72mm in length (including outlet), motor outer diameter: 24.4mm, pump head outer diameter: 28mm - Total length: 73mm (including 7.8mm inlet and outlet) - Inlet and outlet outer diameter: 3.95mm - Waterproof design: The pump can be fully submerged in water during operation. - Color: White - Material: Metal - Dimensions: 72 x 28 x 28mmPackage Contents: 1 x Water Pump Note: Light and display differences may cause slight variations in color compared to the actual item. Measurement allows for an error of +/- 1-3cm.