LinkThru TMU Specifications

Analog Inputs


Inputs

2 x 2-way NTC Thermistors


Measurement range

-5°C to +90°C


Accuracy

+/-1°C


Readings frequency

Every 10 seconds

Power


Battery

3.6V 8500mAh Li-Metal, non-rechargeable, not field replaceable


Lifetime

3 to 8 years, dependent on operating mode

Radio


Frequency

Sigfox – 868Mhz (unlicensed spectrum)


Protocol

Sigfox (see http://makers.sigfox.com)


Output power

14dBm


Wireless range

Up to 15km, Sigfox coverage dependent


Antenna

External omni-directional antenna

Environmental Requirements


Operating temperature

-30°C to +60°C


Storage temperature

-50°C to +85°C

Enclosure


Ingress protection

IP55


Dimensions

99mm x 60mm x 37.5mm


Security

Tamper proof screws, tamper label (void if removed)

Download PDF

TMU devices use the Sigfox network to transmit temperature profile information to the LinkThru software platform. There is no requirement to integrate or interfere with any on-site/local IT or networking systems.

The low power required to send messages via Sigfox optimises TMU battery life. Security of TMU wireless communications is ensured through an array of features, including anti-replay, message scrambling and message sequencing.

WND-UK, the UK’s Sigfox network operator, are deploying Britain’s first dedicated Internet of Things (IoT) network with roll-out scheduled to provide 95% signal coverage of the UK population by 2019.