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Comark BT42C Bluetooth Food Thermometer


The Bluetooth Food Thermometer (BT42C) is Comark’s best hand-held Food Thermometer with added Bluetooth. Take your HACCP temperature recording to the next level with this versatile Bluetooth Food Thermometer. Designed for use within food production areas, the Bluetooth Food Thermometer (BT42C) transmits temperature data via Bluetooth to your chosen User Interface, App or Software Suite using our Bluetooth API.

  • Temperature Range: Thermistor -40°C to +125°C, Type T – 200°C to +400°C
  • Rugged and Waterproof Case (IP65/67)
  • MAX/MIN and HOLD
  • Connector: Lumberg


The Bluetooth Food Thermometer (BT42C) has a Battery life greater than 5,000 Hours from two Alkaline AA cells and the 4-button keypad keeps operation simple. Temperature Alarms are standard across the BT4X range of Thermometers alerting you to out of parameter temperatures (fully user programmable).

It comes in durable, rugged, IP65 rated case, the thermometer is the perfect choice for demanding process environments. The Bluetooth Food Thermometer (BT42C) incorporates a range of advanced features designed to answer the quality control and HACCP requirements of the professional food industry user, plus the added Bonus of Bluetooth connectivity.

Integrate the Bluetooth Food Thermometer (BT42C) using our API in to your Digital Management System and manage all your HACCP temperature recording. It’s a simple way to automate data collection and eliminates the need for handwritten temperature records.

Technical Specifications :

  • Sensors :Thermistor or Type T thermocouple
  • Connector : Lumberg
  • Measurement Range :Thermistor -40°C to +125°C / -40°F to +257°F ,Type T - 200°C to +400°C / -328°F to +752°F
  • Scales :°C and °F
  • Displayed Resolution : 1° > -100° 1° <= -100°
  • Instrument Accuracy : at +23°C / +73°F, full range 0.1% of reading, ±0.2°C / ±0.4°F
  • System Accuracy : at +23°C / +73°F, between 0°C to +70°C / + 32°F to +158°F
  • Thermistor : <±0.3°C / ±0.6°F
  • Type T* : ±0.5°C / ±0.9°F
  • *Typical accuracy with a Comark probe
  • Display :4 digit, 12.5mm LCD
  • Operating Range : -20°C to +50°C / -4°F to +122°F
  • Countdown Timer Interval :1 second to 24 hours
  • Battery Type :2 x Type IEC LR6 Size AA
  • Battery Life (continuous) : Up to 1,000 hours with Bluetooth enabled Up to 5,000 hours , with Bluetooth disabled
  • Weight :128g
  • Dimensions : 152mm x W 58mm x D 22/27mm

Comark Bluetooth API

The Comark APIs enable a User Interface (App) to extract data such as temperature and humidity from the Pocketherm Bluetooth Thermometer and have it sent to the User Interface (App) to be displayed as results. The benefit of this approach is that you can bring large amounts of HACCP critical data from various devices, into a single platform, using a third-party program or software suite. This enables you to monitor manual tasks from product delivery to food storage, food preparation and foodservice. You can also incorporate real-time monitoring data for periodic checks of your storage and display units, thus freeing up valuable staff time to concentrate on more operational and quality tasks.

In order to use the Comark API’s you will of course need a User Interface (App) or Software Suite.

Further Information:


Data Sheets


BT Thermometer with API datasheet