Feature Typical Specification Range Power Source 220-240 VAC, 50/60 Hz Power Rating Typically 3.5 kW to 6.0 kW (kilowatts) Minimum Flow Rate Requires a demand of at least 0.4 to 0.6 gallons per minute (GPM) to activate Temperature Control Adjustable range (e.g., 20°C to 60°C or 98°F to 140°F) Dimensions Approx. 220mm (W) x 390mm (D) x 87mm (H) (varies by model)