Digital Thermometer TFA Twin — wireless indoor–outdoor temperature, always visible

Keep control of your environment at a glance with the Digital Thermometer TFA Twin. A sleek base unit shows both indoor temperature and the outdoor temperature sent wirelessly by the included transmitter, so you can decide when to ventilate, heat or cool more efficiently. Daily high and low values are shown permanently for quick trend checks, while an adjustable temperature alarm and a clear frost icon help you act before conditions become uncomfortable. Designed for reliable, everyday monitoring, the TFA Twin brings trusted performance to homes, workplaces and small businesses.

Key Benefits and Applications

• Instant indoor–outdoor awareness – See room temperature and the outdoor reading together, ideal for planning ventilation, clothing and daily activities without guesswork.
• Energy‑saving decisions – Use the permanent max/min values to spot patterns and fine‑tune heating or cooling, helping reduce energy consumption over time.
• Proactive alerts for comfort and safety – Set a temperature alarm to get notified as soon as your setpoint is crossed, and rely on the frost symbol to anticipate icy conditions around entrances, garages or balconies.
• Flexible placement – Mount on a wall or place freestanding on a desk, shelf or workbench. The compact outdoor transmitter sits discreetly where it measures most accurately.
• Everyday reliability – Stable 433 MHz wireless link and clear, easy‑to‑read display make the TFA Twin a dependable choice for homes, offices, workshops, rental properties and small retail spaces.

Featured technical specifications

• Measurement ranges – Indoor temperature from −10 to +50 °C. Outdoor temperature from −20 to +50 °C for year‑round monitoring.
• Dual sensors – Internal sensor inside the base unit for indoor readings and an external wireless transmitter for outdoor readings included in the box.
• Wireless performance – Transmission frequency 433 MHz with a maximum range of up to 30 m depending on installation and building structure.
• Max–min memory – Daily highest and lowest temperatures are shown permanently and reset automatically every 24 hours for quick trend checks.
• Alarm and frost indicator – Adjustable temperature alarm on the base unit with a dedicated frost symbol to warn of impending low temperatures.
• Power – Base unit powered by 2 × AAA 1.5 V batteries. Transmitter powered by 2 × AAA 1.5 V batteries. Batteries are not included.
• Mounting options – Use freestanding on a flat surface or mount to a wall for clear visibility.
• Dimensions and weight – Base unit approximately 137 × 83 × 17 mm and 105 g for a slim, space‑saving footprint.
• Included – Base station, outdoor temperature transmitter and instruction manual for quick, straightforward setup.

Why this thermometer is the perfect choice for your setup

Choose the TFA Twin at Stratosens.com for a precise, easy‑to‑use solution that makes indoor–outdoor monitoring effortless. You get a carefully curated instrument with clear European SI units, dependable wireless performance and practical alerts, backed by expert product selection and fast support from Stratosens.com. It is the smart way to improve comfort, protect your spaces and make better energy decisions every day.