Option D: 1 60W Pump(Type A) +2 Connectors+ 1 Connecting Wire+1 PWM Signal Generator. Option E: 1 60W Pump(Type B) +2 Connectors+ 1 Connecting Wire+1 PWM Signal Generator. Its unique physical isolation design ensures that the pump rotor, motor stator, and drive circuit are separated from the water, ensuring safety and dependability.
eBay