Flex-Sky-T is a wireless temperature transmitter with an internal Pt100 sensor. Thanks to LoRa technology, the transmitter has excellent radio coverage, up to 10 km in open space.

The two-part design of the transmitter allows uninterrupted calibration changes for the measuring module.

The device consists of two parts, a measuring part and a radio part.

Product code measuring part: 97686
Product code radio part: 97956
Product code device: 98218

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User manual and brochure
Technical specifications
  • Sensor type internal Pt100 element
  • Measuring range: -30…+60 °C
  • Accuracy ±0.5 °C in range -30…+50 °C
  • Sky radio antenna frequency 433.3…434.5 MHz user adjustable
  • Bandwidth max. 300 kHz OBW
  • Maximum transmitting power 10 dBm EIRP
  • Open space range about 10 km with the maximum parameters
  • Indoor range 150–500 m
  • Temperature measurements -20…+50 °C
  • Accuracy: ±0.5 °C between +10…+50 °C
  • Humidity measurements 0…100 %RH non-condensing
  • Accuracy typically ±3 %RH between 20…80 %RH and at a temperature of +15…+30 °C
  • Storage temperature -40…+60 °C, non-condensing
  • Operating temperature -30…+60 °C
  • Protection class IP65
  • Enclosure material plastic (ABS+PC)
  • Battery type LR6 1.5 V alkaline AA, e.g. Energizer EN91.
  • Battery life 1-5 years depending on the measurement interval and amount of radio traffic. Useful life typically 2-5 years.