Temperature and humidity sensor

Wireless sensors protect your inventory 24/7 from equipment failures, power outages, and human error. Receive alerts via email, SMS or phone call when an issue arises, and unlock predictive equipment maintenance to eliminate costly last minute repairs.

Temperature and humidity sensor

Wireless sensors protect your inventory 24/7 from equipment failures, power outages, and human error. Receive alerts via email, SMS or phone call when an issue arises, and unlock predictive equipment maintenance to eliminate costly last minute repairs.

1,200+ foot

range with LoRa,
through thick walls

10 years

battery life

Military grade

data security

10 mins or less

set up time

4G connectivity

no wifi or ethernet required

Place and Go Installation

Therma sensors are easy to place and don’t require wiring or drilling. The sensors automatically connect to a 4G hub with no WiFi or configuration required. Get set up and running in minutes.

Therma temperature and humidity sensor in a lowboy fridge
Therma temperature and humidity sensor in a lowboy fridge

Learn more about
how Therma works

Therma hub on a desk
Therma hub on a desk

Advanced Features

Effortlessly integrate with all of your business tools via Therma’s open API

Automatically adjust your alert temperature thresholds to keep your alerts meaningful with Therma’s proprietary Smart Alert system

Catch costly equipment problems before they happen with Therma’s Intelligent Machine Learning system, which automatically adapts to each unique piece of equipment

Our Dashboard

Save time and improve your
bottom line today with Therma

Wireless Sensor

  • Zip ties
  • 2 x AA Batteries

4G Cellular Hub

  • Activated AT&T SIM card
  • Power supply

Quick Start Guide

+/- 1°C (1.8°F) accuracy

+/- 3% accuracy (between 10% – 90% RH)

Available with an external temperature probe

Thermistor Specifications

  • Accuracy at 25°C+/- 1% (1° C or 1.8° F)
    User Calibrated Accuracy+/- 0.25° C (± 0.45° F)
    Time Constant at 25°C15 sec max
    Weight3.7 oz. (without probe)
    Probe Operating Temperature Range-40°C to +125°C (-40°F to +257°F)

Humidity Specifications

  • Accuracy± 3% under normal conditions (10% – 90% RH)
    RH Operating Range0-100% RH
    RH Response Time8 sec (tau 63%)

AA Specifications

  • Battery Type2 Replaceable AA 1.5 V Batteries
    Dimensions4.375 in x 2.470 in x 1.12 in
    Supply Voltage2.0 – 3.8 V (2 x AA 1.5V Batteries)
    Battery LifeIncluded AA batteries will typically last 8-10 years
    Max Operating Temperature Using AA Alkaline-18°C to 55°C (0°F to 130°F)
    Max Operating Temperature Using AA Lithium-40°C to 60°C (-40°F to 140°F)
    Optimal Battery Operating Temperature+10°C to +50°C (+50°F to +122°F)
    Enclosure MaterialABS

900 MHz Specifications

  • Frequency900 MHz
    Certifications
    Complies with Part 15 of the FCC Rules (FCC ID: ZTL-G2SC1)
    Complies with Industry Canada standards (IC: 9794A-G2SC1)
    Device RangeUp to 1,200 feet non-line-of-sight
    SecurityEncrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)

Cellular 4G Hub Specifications

  • Cellular TechnologyLTE CAT-M1
    SIM CardAT&T
    SIM Card CompatibilityMicro-SIM (3FF) 15 mm x 12 mm x 0.76 mm
    Battery TypeRechargeable Lithium Polymer
    Battery Cycle Life500 times
    Device Memory50,000 sensor messages. Sensor messages will be stored in the event of Internet outage and transferred when a connection is restored.

Humidity Specifications

  • Accuracy± 3% under normal conditions (10% – 90% RH)
    RH Operating Range0-100% RH
    RH Response Time8 sec (tau 63%)

Commercial Hub Specifications

  • Dimensions5.004 x 3.8 x 1.51 in.
    Enclosure MaterialABS
    LED LightsInternet Connectivity Status, Server Status, Sensor Network Status
    Storage Temperature-20 to +60°C (-4 to 140°F)
    Operating Temperature+5 to +45°C (41 to 113°F)

900 MHz Specifications

  • Operating Frequency900 MHz
    Certifications
    Complies with Part 15 of the FCC Rules (FCC ID: ZTL-G2SC1)
    Complies with Industry Canada standards (IC: 9794A-G2SC1)
    Device RangeUp to 1,200 ft. non-line-of-sight
    SecurityEncrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)

Refrigerator, cooler, freezer, and low boy temperature monitoring in restaurants, commercial kitchens,
commissary kitchens, food service, hospitality, supermarkets, grocery stores, and convenience stores to detect failure and prevent food spoilage

Warehouse temperature monitoring to save on energy consumption and energy costs, hot spot mapping, and customer accountability

Vacant commercial property or vacation property temperature monitoring to avoid frozen pipes or excessive heat

Server room temperature monitoring

Greenhouse temperature monitoring and humidity monitoring

Agricultural environmental monitoring

Food manufacturing temperature monitoring and humidity monitoring