TFA 30.3900.02 ID-A0 Wireless Temperature and Humidity Sensor, 868 MHz, White

Wireless thermo-hygro sensor for precise indoor/outdoor climate monitoring. Transmits temperature and humidity data to compatible TFA Dostmann weather stations over a robust 868 MHz signal with a range of up to 100 meters in open field. Splash-proof housing and versatile mounting options make it ideal for continuous environmental tracking.

Advantages

Reliable wireless transmission with 868 MHz technology ensures stable data delivery even through walls. Supports up to 3 selectable channels, allowing multiple sensors to be used with one base station. Long battery life of approximately 1-2 years on two AAA batteries reduces maintenance. Splash-proof design (IPX3 equivalent) withstands rain and moisture for outdoor use. Wide measurement ranges cover extreme conditions from -40°C to +60°C and 1% to 99% relative humidity.

Suitable for

• Monitoring temperature and humidity in living rooms, bedrooms, or offices
• Outdoor climate tracking on balconies, patios, or gardens
• Greenhouses, cellars, and storage rooms requiring humidity control
• Integration with TFA Dostmann weather stations (IT+, VIEW series)
• Multi-point environmental monitoring with up to 3 sensors per station

Key specifications

• Measurement functions: temperature and humidity
• Temperature range: -40°C to +60°C (-40°F to +140°F)
• Humidity range: 1% to 99% RH
• Transmission frequency: 868 MHz
• Wireless range: up to 100 meters (open field)
• Power source: 2x 1.5V AAA batteries (not included)
• Battery life: approximately 1-2 years
• Channel selection: 3 channels
• Weather resistance: splash-proof (IPX3 equivalent)
• Mounting: wall mount or freestanding
• Material: plastic
• Update interval: approximately 10 seconds
• No integrated display

Recommendations

For best performance, place the sensor within 100 meters of the base station and avoid metal obstacles. Use lithium batteries for extended operation in low temperatures. Pair with a TFA Dostmann weather station to monitor multiple zones simultaneously.