Make: Projects
Wireless Temperature Alert
Easily turn an old mechanical thermostat into a wireless temperature alert!
Many home owners with greenhouses or other temperature-sensitive areas on their property are often looking for a cost-effective method of receiving an alert should the temperature fall or rise beyond their specified thresholds. This project solves that!
I got my parts at Absolute Automation.
Steps
Step #1:
Next
- First you need some sort of mechanical temperature sensor. Old-style thermostats work very well. Or, you can purchase the inexpensive unit pictured here from http://www.absoluteautomation.com.
- With these thermostats you can easily select your high and low temperature thresholds. There is a metal coil in the temperature sensor which expands and contracts when the temperature rises and falls. When it increases or decreases to your marked threshold points the coil makes contact with the pins.
