TFA SPRING 35.1129 Wireless Weather Station with Colour Display, Indoor/Outdoor Temperature and Humidity

TFA SPRING 35.1129 Wireless Weather Station with Colour Display, Indoor/Outdoor Temperature and Humidity

The TFA Dostmann SPRING 35.1129 is a wireless weather station with an illuminated colour display for monitoring indoor and outdoor temperature, relative humidity and local weather conditions. Its integrated electronic barometer provides an animated weather forecast based on atmospheric pressure changes, while the wireless outdoor transmitter sends measurements over a distance of up to 60 m in open areas. The station also features a DCF77 radio-controlled clock, alarm and adjustable temperature alerts.

Key specifications: Outdoor temperature –40…+60 °C • Indoor temperature 0…+50 °C • Humidity 1–99% RH • 433 MHz / up to 60 m • Colour display • DCF77 clock

Main Features and Benefits

• Indoor and outdoor climate monitoring – simultaneously displays temperature and relative humidity readings for both locations, helping users monitor changing environmental conditions.
• Wireless outdoor transmitter – transfers temperature and humidity readings over a 433 MHz radio connection with a maximum free-field range of 60 m, eliminating the need for cables.
• Animated weather forecast – the integrated electronic barometer uses atmospheric pressure changes to indicate the expected weather trend for approximately 12 hours using six different weather symbols.
• Illuminated colour display – offers two continuous brightness levels and an OFF setting when powered by the supplied mains adapter.
• Minimum and maximum value memory – allows users to review recorded indoor and outdoor temperature and humidity extremes.
• Trend indicators – show whether temperature, humidity and atmospheric pressure are increasing, decreasing or remaining stable.
• Adjustable temperature alerts – upper and lower temperature limits can be configured for both indoor and outdoor measurements, with an audible warning when a limit is exceeded.
• Dew point and heat index functions – provide additional information related to humidity and perceived heat.
• DCF77 radio-controlled clock – provides automatic time synchronisation, date and weekday display, and an alarm with a 10-minute snooze function.

Applications

The SPRING weather station is designed for everyday use in homes, apartments, offices and other dry indoor environments. It provides convenient access to local outdoor conditions and indoor climate measurements.

Temperature and humidity information can help users evaluate ventilation and heating conditions, while the integrated barometer offers a general indication of upcoming local weather changes.

Compatibility and Limitations

• Supplied with the TFA 30.3206.02 wireless temperature/humidity transmitter.
• The TFA 30.3249.02 is also confirmed by the manufacturer as a compatible replacement transmitter.
• The maximum 60 m wireless transmission range applies to unobstructed outdoor conditions. Walls, reinforced concrete and radio interference can reduce the actual range.
• Automatic time synchronisation requires reception of the DCF77 radio signal. Manual time setting is available if reception is unsuccessful.
• Continuous display illumination is available only with the mains adapter. During battery operation, the backlight is activated temporarily by pressing a button.
• Weather forecasts are based on local atmospheric pressure trends and should be regarded as general weather indications rather than precise meteorological predictions.

Technical Specifications

Parameter	Specification
Manufacturer	TFA Dostmann
Model	SPRING 35.1129
Product number	35.1129.01
Product type	Wireless weather station
Outdoor temperature measuring range	–40…+60 °C
Indoor temperature measuring range	0…+50 °C
Relative humidity measuring range	1–99% RH (indoor and outdoor)
Humidity measurement accuracy	±5% RH within 30–80% RH
Temperature measurement accuracy	Not specified by manufacturer
Temperature units	°C / °F
Atmospheric pressure monitoring	Integrated electronic barometer with pressure trend indication
Weather forecast	Animated, 6 weather symbols
Forecast period	Approximately 12 hours
Additional measurements	Dew point, heat index
Measurement memory	Minimum and maximum readings
Temperature alerts	Adjustable upper and lower indoor/outdoor limits
Wireless transmission frequency	433 MHz
Maximum wireless range	60 m (free field)
Maximum transmitter RF power	<10 mW
Outdoor transmitter update interval	50 s
Included outdoor transmitter	TFA 30.3206.02
Clock synchronisation	DCF77, 77.5 kHz
Time display	12 / 24 hours
Time zone adjustment	±12 hours
Weekday display languages	German, French, Italian, Dutch, Spanish, Danish, English
Alarm	Audible alarm with 10-minute snooze
Display	Illuminated colour display
Display lighting	2 brightness levels and OFF when mains-powered
Base station power supply	3 × 1.5 V AAA batteries or mains adapter
Power adapter input	230–240 V AC, 50 Hz, 50 mA
Power adapter output	5.0 V AC, 0.15 A, 0.75 W
Outdoor transmitter power supply	2 × 1.5 V AA batteries
Base station dimensions	210 × 26 (60) × 140 mm
Base station weight	348 g (without batteries)
Outdoor transmitter dimensions	40 × 21 × 130 mm
Outdoor transmitter weight	47 g (without batteries)
Housing material	Plastic
Installation	Freestanding or wall-mounted
Compliance	Radio Equipment Directive 2014/53/EU

Design and Operation

The base station features a colour display with separate sections for indoor and outdoor measurements, animated weather symbols, time and date. The housing includes control buttons, a fold-out stand and wall-mounting points.

The SNOOZE/LIGHT (HI–LOW–OFF) button controls display brightness. Additional buttons provide access to time settings, alarm functions, temperature alerts and supplementary climate information.

Important Usage and Safety Information

• The base station and mains adapter must only be used in dry indoor environments.
• The outdoor transmitter is splash-resistant but not waterproof. Install it in a position protected from direct rainfall.
• Use only the mains adapter specified and supplied by the manufacturer.
• For representative outdoor temperature measurements, position the transmitter in a shaded location away from direct sunlight and heat sources.
• Forecast reliability improves as atmospheric pressure measurements accumulate. According to the manufacturer, optimum reliability is generally reached after approximately 30 days.
• Where DCF77 reception is available, the time zone offset must be adjusted according to the local time zone.

Package Contents

• TFA SPRING 35.1129 base weather station – 1 pc.
• TFA 30.3206.02 wireless temperature/humidity transmitter – 1 pc.
• Mains power adapter – 1 pc.