Rated input voltage: AC 220–240 V Interface: G3/4" Frequency: 50/60 Hz Insulation class: Class F Ambient temperature range: –10 °C to +60 °C Maximum relative humidity: 95% (at 25 °C) Start-up performance: Operates normally at 85% of rated voltage and water pressure between 0.02–0.80 MPa Vibration test: Operates normally after 10 minutes of vibration on each of three axes (amplitude: 3 mm, frequency: 22 Hz) Flow characteristics: Meets specified flow rate requirements when connected to a regulated water source at rated voltage for 1 minute Dielectric strength test: Tested with high-voltage equipment (voltage meter accuracy ≥5%), leakage current ≤0.5 mA between conductive parts and mounting holes Continuous energization test: Operates without deformation or coil burnout after 12 hours of energization at rated voltage with no water flow Insulation resistance: ≥100 MΩ (measured with 500 V megohmmeter or insulation resistance tester, accuracy ≤5%) between conductive parts and exposed non-conductive parts