I'm looking for a telephone operated thermostat monitor I want to buy a system that will alert me via telephone (land line) if the temperature rises above a certain...
saurasaurus replied:
They are pretty inexpensive for cellular service. I have one I paid about 70 for that I put a 12 dollar GSM chip into every 3 months. It tells me the temp via text, and I can turn on an outlet (hooked up to a heater) via text as well.
Nyxian replied:
Hi. I'm not really sure if it is suited for this sub, so you might not get answers. If you are looking to build/design your own system, check out /r/Arduino the Arduino subreddit. A simple Arduino based setup will be one or more temperature sensors wired into the Arduino, which will be able to make an alert if it gets outside of your predefined range. The alert can either be hardware based, such as a buzzer powered directly by the Arduino without any PC or you can use the Arduino with wifi/Ethernet set up to email/text/call a phone in the event of the temp leaving the range. If a great monetary loss happens if it gets too hot, you might want to look into a commercial solution.
NineCrimes replied:
I know we've done something similar with a KMC controller and an auto dialer for a customer before, but it won't be cheap considering you need a license to program those types of controllers.
Burn-O-Matic replied:
A simple system would be an autodialer, refrigeration thermostat, and 12v power supply. Connect thermostat or temp switch up to autodialier and plug phone line in. All in probably less than $200. [Autodialer](http://www.homecontrols.com/Dakota-Alert-Land-line-Auto-Dialer-Slave-No-RF-Link-DAAD01S) [Thermostat](http://www.barefrigeration.com/Products/Traulsen---Cooler-Control---267275.html?gclid=Cj0KEQjwnZShBRDfxqzr55rcyMEBEiQA1iRNP0CeRoJlXAe31NXkOqstvfIzoAXR4Wc4r0KIhHejvbAaAtYO8P8HAQ) Both the thermostat and 12v power supply can be had from a local HVAC supply or refrigeration service company. * edit to say make sure the switching action for thermostat matches autodialer. In this case thermostat closes and autodialer calls on closed switch.
Ribblan replied:
I know its alredy mentioned. But i did it as a bachelor thesis. You need to learn arduino programming, set it up as a Web server. Then make a android program to send http messages to the server. I guess this is the easiest totally customisable way you can do it.