Up to 5 bar (73 psi) pressure. Whisper quiet operation. Five-chamber construction. Smooth flowing. Self-priming. Integrated pressure switch turns on and off automatically when the spray nozzle is opened and closed. Dry running without damage. Low power consumption. Complete with spray nozzle, PUMProtector inlet strainer, and hose connection for 1/2″ hose. Connection: 3/8″ BSP x 1/2″ barb. 3.5 GPM. 12 volt.