WIDE TEMP & HUMID RANGE & CARBON MONOXIDE LEVEL MONITORING: Inside outside thermometer hydrometer measures indoor outdoor temperature and humidity percentages simultaneously; Indoor/outdoor temperature range: 32°F to 131°F (0°C to 55°C); Humidity range: 10% to 99%，<=95%RH. Monitoring temperature, humidity and CO remotely through APP.Alert functions for specific levels of temperature and humidity.Temperature/humidity/CO trends and graphs. HANDS FREE MONITORING: Wireless thermometer outdoor with strong signal (Connecting to network using 2.4GHz WiFi,NOT support 5GHz) penetration humidity sensors to get the real-time temperature and humidity records and carbon monoxide level monitoring;Real-time clock with date and time; Tabletop or wall-mountable and lanyard design; Powered by AA battery or USB power adapter(included). SMART DESIGN: Temperature and humidity monitor can display the readings from up to 3 temperature sensors to monitor different locations;85-decibel alarm announces when carbon monoxide is detected. Additional sensor can be ordered.Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested.LCD shows readings without requiring a smartphone.Low battery warnings. INFORMATIONAL: Weather stations wireless indoor outdoor record 24-hour or 12-hour time mode max and min temperature and humidity readings and carbon monoxide level monitoring. Wireless thermometer indoor outdoor with temperature trend arrows indicates whether it's getting warmer or colder near the remote temperature monitor.Temperature in Fahrenheit or Celsius. WIDELY APPLICATION: Indoor hygrometer wireless ensures proper temperature and humidity and Carbon monoxide control, which has important health benefits, thermometer digital can be placed in baby room,nursery,cellar, basement,warehouse,greenhouse,gym,hotel,garage and Intelligent breeding farm,outdoor tents,vacation,hiking,picnic,barbecue etc... TUGARD Tuya WiFi Carbon Monoxide & Temperature & Humidity Display, Digital Hygrometer Indoor Thermometer Wireless Temperature and Humidity Gauge Monitor Room Thermometer, Humidity Meter Carbon Monoxide Detector for Home,Villa,Gym,Cellar,Baby Room，Nursery, Cellar, Basement, Warehouse and Greenhouse，Intelligent breeding farm etc... USB Power Adapter or 3 AA Battery Backup