Looking for a good Temperature alarm and a thermal shutoff switch

I want my lights to shut off (220v) if the temperature gets above whatever I set it to. I also want a temperature alarm that is loud and will go off if the temperatures reach my manual setting of between 72 - 90 degrees F. What can I get that's good at a good price?

I got some of these to use for a light controller. Never did set it up though so I cant say how well they work.

http://www.amazon.com/gp/product/B004ZRMJMQ/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

Here's how we run things these days: Power for ALL lights get fed to a sub panel via a contact relay switch w/ 120v trigger. The 120v trigger cord gets plugged into timer, than plug timer into high temp shutdown switch,which is than plugged into a regular outlet(hence the 120v trigger). As far as the alarm, I don't know, but the CAP brand ones we used to use would blink it's light, if there was a shutdown. They have a delay before they allow power through, after the temps have dropped below the set point. But stay the hell away from CAP brand! There quality of products went out the window a few years back. The high temp shutdown switch is a must, especially in case of Ac failure in a sealed growroom.
Throw away all them hard wired timers you were using for your lights. Because now you only need one simple digital one, as your timer is barely handiling any power, just the contactor.
Contactors are the bomb!

If you are worried that much, and feel you need an 'Alarm'... why are you concerned? Design your room with no chance of it going over 82 f.... Large enough AC unit is the deal... I worried every day temps would get to 'hi' and then got AC units [two one for bud/one for veg] and I run one room day hours [veg] and run my 12/12 room off hours for veg, and this has the added benefit of keeping both rooms warmer in the winter [shared air]... Good Luck !

If an ac fails in a sealed room, some super duper bad shit can happen if the
Lights stay on.

Super duper bad shit did just happen. I just picked up a honeywell Electric heater thermostat from Home Depot for $22. It handles 22 amps at 220v and 110v. I have a CAP MLC-4X Light controller that I picked up a couple of years ago. I also bought a Gro1 Wireless Weather Station with an extra wireless receiver. I have insulated sealed rooms and I have someone at the house all the time. If I had this installed (it cost $50 total with the extra receiver) I would not have lost $2000+. As for AC power, the unit is a $3500 3 zone heat pump brand new. It was hooked up about a month ago and I just upgraded the service to my house to 150 amp and when I turned the power back on the AC didnt turn back on - I never checked. 24 hours later its been 120+ degrees. If I had either one of these solutions in place this would not have happened.

Yeah dude, hook up lights through that MLC-4X, or a diy contactor like i posted before. Then plug trigger cable into a high temp shutdown switch, than timer. And sleep Good at night.
Btw the CAP brand high temp shutdown switch, (with 15 minute Delay to avoid hot starts) isn't to bad, not as bad as some of there other products

The Gro1 Wireless weather station does not have a temperature alarm. I have installed the Electric Heater Thermostat and it works well. Can anyone suggest a product that will send an alarm if the temperature goes too high or too low?

RE: Temp alarm. I'm using this one, you can set it to trigger alarms (email, SMS) on min/max humidity, temperature, and with a wet probe, soil temperatures. Besides the alarm features, it collects data over time which you can import into a database/excel and adjust your room variables accordingly. I found it invaluable for my first year, logged outside temps/humidity along with the provided temp/humidity data to correlate outside vs. inside (grow room) temps. I now program my timers based on min/max outside temps, saved me a ton of $$$ and allows you to tweak things to a science
http://store.lacrossetechnology.com...r-and-alert-system-with-wet-temperature-probe