Accurate Climate Monitoring: This digital indoor and outdoor thermometer provides accurate temperature and humidity readings.The large white backlit screen displays historical data,trends and comfort indicators. Enhanced Visibility: Bold black numbers ensure easy reading,and its versatile design allows for both desktop and wall-mounted setups,making it accessible from every viewing angle. Extensive Connectivity: Monitor multiple locations using three wireless sensors connected to the main display,allowing simultaneous tracking of different areas up to 150 meters apart.Perfect for comprehensive monitoring of your home,basement or greenhouse. Wide Measurement Range: Capable of measuring indoor temperatures from 14℉ to 122℉ and outdoor temperatures from -40℉ to 140℉ and humidity levels from 20% to 95%.The device ensures precise climate control and can be set for damp,comfortable,and dry conditions. Wide Use and Alerts: Place this remote thermometer in any room-bedroom,baby room,wine cellar or office.It updates max/min data every 24 hours,ensuring your environment always matches your preferences. Measurement range: Indoor temperature display range:-9.9℃-+50℃ & 14℉-+122℉ Indoor humidity display range:20%RH-95%RH Outdoor temperature display range:-40℃-+60℃ & -40℉-+140℉ Outdoor humidity display range:20%RH-95%RH Resolution: Temperature display resolution:0.1℃&0.1℉ Humidity display resolution:1%RH Power supply:Host 3xAAA batteries; Transmitter 2xAAA batteries (batteries not included) Colour:Black Material:ABS Size:8.7x10.5x2.45CM Package Contents: 1 * Host 1 * Transmitter 1 * English Instruction Manual