Specifications Monitor WiFi Frequency 802 11b g n 2 4GHzWireless Protocol 433MHzInput Voltage DC5V1A Type CTemperature Detection Range 10°C 60°CHumidity Detection Range 0 99 RHSize 105 76 16mm Sensor Transmission Range Up to 100m open area Sensor Power Supply AAA Battery 2 DC1 5V not included Wireless Protocol 433MHzTemperature Measure Range 10°C 60°CHumidity Measure Range 0 99 RHDevice Dimensions Sensor 7 2 2 5 2cmFeatures 1 Remote App Control Monitor and control temperature and humidity from anywhere via the Tuya or Smart Life app 2 Voice Control Compatible Works with Google Home and Alexa for hands free operation 3 Data Storage and Export Supports data storage for up to 1 year and easy export of historical data 4 Weather Station Function Real time updates on weather conditions with 7 types of weather changes 5 TemperatureHumidity Alarm Set customized temperature and humidity alerts to receive notifications when preset thresholds are met Package Include 1 x WiFi Smart Temperature Humidity Monitor2 x Wireless Sensors2 x Lanyard1 x USB Cable1 x Accessory Pack1 x Manual1 x Package Box