Avatto Smart, portable thermostat for boiler or thermo valves, Wi-fi TUYA + RF

Control Panel: Power supply：3 x 1.5 V alkaline AA batteries /USB powered (Type-C interface） Temp. setting range：5~95℃ Operation temperature range：-5~50℃ Measurement accuracy：0.1℃ Setting temp. accuracy：0.5°C Transmission distance：≤200m in the open air Protection level：IP20 Wireless frequency：433MHz (FSK) /433MHz(Bidirectional FSK) Recirver: Power supply：AC100~240V;50/60Hz Device power consumption：1W max Ambient temperature：-5~50℃ Transmission distance：≤200m in the open air Wireless frequency：433MHz (FSK) /433MHz(Bidirectional FSK)