Rated input voltage: AC220–240V Interface: G3/4" Frequency: 50/60Hz Insulation class: Class F Ambient temperature range: –10°C to +60°C Relative humidity: up to 95% (at 25°C) Start-up performance: operates normally at 85% of rated voltage and water pressure of 0.02–0.80 MPa Vibration test: operates normally after 10 minutes of vibration on each of three axes at 3 mm amplitude and 22 Hz frequency Flow characteristics: when connected to a regulated water source at specified pressure and energized at rated voltage for 1 minute, meets specified flow requirements Electrical strength: tested with high-voltage equipment (voltmeter accuracy ≥5%), leakage current ≤0.5 mA, applied between conductive parts and mounting holes Continuous energization: operates without water flow for 12 hours at rated voltage; no deformation of valve body or coil burnout observed Insulation resistance: measured with 500 V megohmmeter (accuracy ≤5%); resistance between conductive parts and exposed non-conductive parts >100 MΩ