Wireless Temperature Sensor System for Ultra-Low Temperature Freezers


The Leap ultra-low temperature sensor system continuously monitors the internal temperature of your ultra-low freezer (-80c). Set alerts via phone, text, or email to know about issues even if you’re not on-site. Streamline auditing processes. Ideal for temperature-critical applications such as laboratories, medical facilities, vaccine storage, medicine storage.

wireless temperature sensor video demonstration

wireless temperature sensor video demonstration and tutorial

This freezer monitoring system is designed with key features that are only available in the Leap product line:

  • High accuracy sensing in the calibrated range from -80C to -60C.
  • Optional industrial door-open sensor helps troubleshoot temperature alerts, as well as tracking each time the door is open.

Contact us to find the best combination of features for your facility.


Part of the breakthrough Leap Sensors® system.


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Leap Sensors are specially designed to easily adapt to your specific needs. If this isn’t exactly what you need, please contact us.

Wireless Ultra-Low Temperature Freezer Sensor Specifications

  • Temperature Probe Range:  -90C to 40C, calibrated at -80C and -65C.
  • Temperature Accuracy (typical): +/- 1.0C in the calibrated range.


  • Fast and easy installation with the hook and loop and foil stickers. Special adhesive sticks cold surfaces.
  • Cable: 6 feet long total length.  The 3 feet of cable at the probe end is rated for ultra-cold temperatures and has a diameter of 0.1 inch.  The 3 feet of cable connecting to the transceiver node enclosure is regular industrial cable that is not rated for ultra-cold temperatures.
  • Probe: Stainless steel 1.2 in long x 0.16 inches in diameter.
  • Industrial door-open sensor (optional) transmits every time door is opened, streamlining tracking as well as helping to troubleshoot temperature alerts. Simple installation assures long-term reliable operation.

About Leap Sensors®

Better Design – Better Data – Better Decisions™

Based on Phase IV Engineering’s 30 years of wireless sensor experience, Leap is THE system designed from the ground up to meet the specific needs of industrial users. These sensors are a true leap advancement in Industrial IoT wireless sensing.

  • Modular design makes it easy & cost-effective to adapt to your specific needs – and update easily for a “future-proof” system.
  • Edge computing manages large amounts of data before transmission to software – only get information you need.
  • Bank standard data security: Multi-layered Thread network security using AES-128 data encryption.
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This wireless sensor is ideal for monitoring:

  • Ultra low temp (ULT) freezers (-80C)

Patents pending.

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