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ALTA – High Temperature Sensor, AA, 3′ Lead


Perfect for high temperatures from -50°C to 370°C. Suitable for boiler temp. monitoring, ovens and cooking devices, heaters and HVAC units.


With industry-leading range, security & affordability, Monnit’s ALTA range of remote wireless sensors has set new benchmarks. Since their introduction in 2017, Monnit’s ALTA Sensors have been global game-changers for many industries including Food Service, Facility Management, Manufacturing, Logistics, Pharmaceutical & Medical.

This wireless temperature sensor is perfect for monitoring high temperatures from -50°C to 370°C around the sensor’s physical location by utilizing one of the world’s most accurate and advanced thermistor’s built specifically for this purpose

The sensor can be used in various critical applications such as ovens, heaters, furnaces and boilers. If the temperature exceeds preset thresholds that you establish, the sensor issues an alert via text, email, or call.

Other common uses include:

  • Boiler Temperature Monitoring
  • Ovens and Cooking Device Monitoring
  • Heater Temperature Monitoring
  • HVAC System Monitoring To Detect Failures Or Heating/Cooling Issues


Our sensors have paired exclusive RF technology with industry-leading power management to achieve the best battery life in the IoT industry. While the competition lasts anywhere from six months to two years, Monnit has made 10 years battery life possible with a pair of two AA batteries.


Our sensors provide upto 4 times the range of standard competitor wireless sensors, which means you don’t need as many Gateway’s and a much wider coverage area. Our sensor has a non-line-of-sight reach of 300 meters through upto 12 walls. This is all possible due to the most advanced Frequency-Hopping Spread Spectrum (FHSS) technology that allows for superior interference immunity from other wireless devices.



The sensor has Monnit’s most secure embedded Encrypt-RF™ Security which consists of a 256-bit Diffie Hellman key exchange and AES-128 CBC encryption for all sensor data messages. Security is maintained at all communication points from sensor → gateway then gateway → software, then back again.


The user-customization settings allow you to set the frequency of readings with the ability to set thresholds for alerts via SMS text and/or email.

The sensor will store as many as 3,100 time-stamped messages if communication is disrupted for any reason (power outage, network disruption … etc). Once the communication is restored all messages will be delivered in chronological order.