Note: You need to buy the faucet you want to install with this water heater. *Technological parameters and specifications Rated voltage: AC 220 V. Rated frequency: 50Hz/60Hz. Rated power: 3500 W. Suitable water pressure: 0.1 MPa-0.6 MPa (if the water pressure is insufficient, it may not lead to hot water, please buy with caution.) Waterproof level: IPX4. Flow rate when switched on: ≥ 1.5 L/min. Minimum water resistance at 15℃: ≥1300Ω-cm. Protection class against electric shock: Heating system: bare heating element. Nominal water pressure: 0MPa. Switch-on pressure: 0.05 MPa. Temperature range: 0-75°C. Cable diameter: 3 x 1.5 mm². Water connection: G 3/8 inch. Size: 13 x 18 x 7 cm. Weight: 1 kg. * Safety note: 1. The water heater must be connected with a secured grounding, it is forbidden to disassemble the grounding device. 2. It is forbidden to install and use the water heater upside down. 3. The rated current of the power switch must not be less than the rated current of the water heater. 4. The device must be filled with water before switching on when used for the first time or taken out of service for a long time. 5. If the water in the device could freeze, do not turn it on before making sure the ice in the water heater has thawed. 6. Turn off the power and turn the inlet valve when not in use. 7. If the power cord is damaged, it must be replaced by the manufacturer, maintenance department or a professional. 8. Turn off the power when the water heater is clogged and clean the inlet filter and outlet shower. 9. The outlet should not be connected to a tap or connector that is not recommended. 10. When the water temperature is 15 °C, the water resistance should not be less than 1300 Ω * cm.