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  • Monitor ambient temperature and humidity with the built in sensor

  • Attach two external temperature sensors for monitoring temperature from cryogenic to boiling

  • Receive text message alerts when an alarm occurs

  • Internal battery backup

Free Android App available

Get it here

Feel free to call us if you need more information or to order


The CM712 monitors temperature, humidity, 2 door sensors, and a water sensor, and will alert you to trouble via text messages. No phone line required!

Monitor temperature, humidity, NC dry contacts.  Detects water and power failure.

Perfect for monitoring remote facilities, boats, trucks, campers.

With the CM712 you can monitor the following sensors all over the cell network:

  • Two external temperatures, from -200°C to +200°C

  • Built in sensor allows you to monitor ambient temperature and humidity

  • Two door sensors

  • Water sensor

  • Power


You program the CM712 by sending simple text messages and you receive alarm notices via text messages.


Receive a text message when the temperature or humidity goes out of limits, a door is opened, or water is detected.


Receive a text message when the alarm condition is corrected.


Receive reminder text messages if an alarm condition is not corrected.


Receive a text when the power goes out or the internal or external battery is low.


The CM712 can operate from a 12vdc source so you can use it in cars, trucks, campers, boats. 


SIM Plan Details

A SIM card plan is required for the CM712 to connect to the cell network.  Two options are:

  1. We provide and manage a T-Mobile™ SIM and bill you annually.  Our simple billing plan is:

    1. $150/year for 400 text messages/month

    2. $225/year for 1000 text messages/month. 

  2. Obtain a SIM from Verizon™, AT&T™ or from any GSM cell service provider worldwide.


Feel free to call our tech support line if you have any questions.

Overage charges may apply at a rate of $.15/text.

Plans are billed in advance.


  • AT&T and T-Mobile Quad-band EGSM 850 / 900 / 1800 / 1900 MHz

  • Verizon LTE Band 1700 (B4), 700 (B13)

  • SIM card size 2FF

  • Works on the AT&T™, T-Mobile™, Verizon™ cell networks. 

  • Program up to four cell phone numbers to send alarm text messages to.

  • Program an ID text so if you have more than one CM712 you'll know which one is in alarm.

  • Programmable high and low temperature limits for each sensor.

  • Programmable alarm time delay for each sensor.

  • Handy reminder feature will send additional text messages if an alarm condition continues.

  • Internal rechargeable battery backup.

  • Ability to connect external battery for even longer life when power is out.

  • Wall mount enclosure.


Two external temperature sensors

Measuring range: -328°F to 392°F, -200°C to 200°C

Accuracy: +-2°F

Resolution: 1°F

Sensor leads can be extended to 100'

One internal temperature sensor

Measuring range -4°F to 154°F

Accuracy: +-2°F

Resolution: 1°F

One internal humidity sensor

Measuring range: 0 to 100% RH

Accuracy: +- 3%

Resolution: 1%

Antenna bulkhead fitting: SMA Female

CM712 Operating Temperature Range 32°F to 125°F

Enclosure Dimensions: 5.625" x 3.250" x 1.375"

Plug-in wall transformer included

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