Orbit K – Product description

Last update: 11/04/2024
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Product Description

The Orbit K is a wireless transmitter for temperature measurements using type K thermocouples. It is the industry’s most cost-efficient solution for real-time monitoring of the curing of concrete.

Install the thermocouple, connect it to the Orbit K and it will automatically start sending the temperature data continuously. Orbit K uses Sigfox, the world’s largest IoT network, which offers a longer range than WiFi and Bluetooth. The data is transmitted to the cloud through nearby Sigfox antennas or gateways.

The temperature readings are available in the Maturix® Web Portal. The concrete strength is estimated based on the temperature history using the Maturity Method (ASTM C1074). All of this happens automatically and in real-time, and you can access the data from anywhere.

Placed in a tough box, the Orbit K is designed to withstand the harsh environment at construction sites. The transmitter can be reused again and again as only the economical thermocouple is embedded into the concrete.


Orbit K is available in four variants, one that is certified for use in Sigfox RC1 (20200-1) and one that is certified for use in Sigfox RC7 (20200-7). The Sigfox RC2 (20200-2) and Sigfox RC4 (20200-4) versions are available as samples.



Temperature Measurements

RangeType K thermocouple: -200 to 1260 °C (-328 to 2300 °F) 1
ToleranceType K thermocouple: ±1.5 °C (±2.7 °F) 2
Internal digital sensor: ±0.3 °C (±0.54 °F)
Resolution±0.1 °C (±0.18 °F)
Thermocouples SupportedType K (Ni-Cr / Ni-Al)


Data Transmissions

Transmission Interval

Cable connected: Once every 10 mins 3
No cable connected: Once every 6 hours
Downlink: Once every week




RC1, RC7 (Sigfox Ready, Class 0)

RC2, RC4

Wireless Signal Range (using Sigfox Gateway)

Up to 3 km (1.86 mi) 4


Use and Storage


-30 to 50 °C (-22 to 122 °F)


0 to 100 %RH

Ideal Storage Conditions

Indoor, 20 to 30 °C (68 to 86 °F)


Mechanical Specifications

Dimensions (L x W x H)

164 x 114 x 42 mm (6.46 x 4.49 x 1.65 in)


323 g (11.39 oz)

MaterialsABS plastic
Battery Type

Li-SOCl2, 3.6 V, 5.400 mAh (non-replaceable) 5

Socket TypeMiniature, type K, female
LEDSingle color LED




CE, Radio Equipment Directive (RED), RoHS


Compatible Software


Maturix® Precast
Maturix® In-situ
Sensohive App

1 Dependent on type K thermocouple. Max. temperature difference between device and thermocouple measurement is -200 °C and +1260 °C.
2 The tolerance depends on the type K thermocouple.
3 Learn more about changing the intervals: maturix.com/transmissions.
4 Depending on environment. Learn more: maturix.com/sigfox.
5 Battery life depends on operating temperature and frequency of transmissions. Standard configuration gives a lifetime of up to 8 months with thermocouple inserted 24/7. We guarantee 20.000 measurements or 8 months operation (whichever comes first).

Technical Drawing of Orbit K in Tough Box


Compatible Probe