... difference: 3°C- 10°C 4) Fitting size:28±0.25mm5) Rated at 16A/250V 50/60Hz 6) Main body ... mm)Thermometer Bulb Length(mm)WHD-40 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 ... 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,F,H 50-250°C ≤8°C ±8°C 300-3000 ... Φ3×170WHD-320 B,E,F,H 50-320°C ≤10°C ±8°C 300-3000 Φ ...