You need to prepare in advance: an independent earth leakage circuit breaker (ELCB) (16A or above is recommended), a water inlet connecting pipe, a water inlet valve switch, and a power cord that meets the power requirements (2.5mm² or above for 3500W/4500W models, 4mm² or above for 5700W and above models). Please select electrical materials that comply with national standards to avoid potential safety hazards.