Milesight IoT WT103-868M Smart Radiator Thermostat

• Suitable for environments such as hotels, schools and care homes
• Upgraded PID algorithm: ±1 °C temperature accuracy, 30%+ lower energy consumption vs. WT101
• One-body design: battery replacement in ~8–10 seconds, tool-free snap plug or secure screw mount
• Compatible with 95%+ mainstream radiator valves 10+ metal adapters (RA, RAV, RAVL, Giacomini, M28 (Comap, Herz, TA, Markaryd))
• Rotatable display: reads correctly in vertical and horizontal mounting, clear in low light
• 3 control modes: 0–5 scale, target temperature, valve opening (remote fixed position via platform)
• For both radiator heating and underfloor heating (with WT401)
• Child lock &amp theft-deterring collar for public areas
• NFC one-touch configuration with independent device password
• Up to 16 heating plans within one preset date period
• Open-window detection &amp freeze protection
• Power: 2 × 1.5V Li-FeS2 AA replaceable batteries (3000 mAh in total), &gt5 years battery life
• Valve control: stepping motor default valve fitting M30 × 1.5 mm
• Functions: 0–5 scale automatic temperature control, valve opening control, heating plans, freeze protection, open-window detection, effective stroke, valve descaling

Temperature Sensor:
Type: NTC
Range: -20 °C ~ 60 °C
Accuracy: ±0.5 °C (0 °C ~ 50 °C)
Resolution: 0.1 °C
Operating Temperature:
-20 °C ~ 60 °C
Relative Humidity:
0% ~ 95% (Non-condensing)