... CERTIFICATES OF CQC AND CE13) Widely used for electric water heater, washer, electric oven,ice machines, fish ponds, etc.14) ... B,E,F,H 0-40°C ≤4.5°C ±5°C 300-3000 (110)WHD-85 B,E, ... F,H 30-85°C ≤4.5°C ±5°C 300-3000 (50)WHD-93 B,E, ... F,H 30-93°C≤4.5°C ±5°C 300-3000 (45)WHD-110 B,E ... ,F,H 30-110°C ≤4.5°C ±5°C 300-3000 (40)WHD-250 B,E, ... ≤10°C ±8°C 300-3000 Φ3×130 electric heater tube thermostat