No need for that you can easely use many analog or digital temp sensors and measure voltages with your projects.
Do you have some programming uC knowledge ?
Thise days is high temp at my location, I dont like high heat. There are some peoples I think they are aliens in humans costime they love heat of over 40C.
I put brain on idling to avoid overheating, as cooling liquid I use cold beer. :smile:
You can use lots of uC, I use ATMega32 to log 8 temp sensors, or you can use PIC18F4550 in example like this, of course you can adjust source code to your needs :
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On each ADC you can put one LM35 or measure voltages. For your needs you need to use voltage divider for high voltage.
This is just one example.
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Sometimes if PC is included in project you can have PC application which send email, when email received in inbox at ISP, ISP send SMS notification with subject of email which containts temp, voltage, and other informations. Or if you have some nice phone like my favorite Android Samsung Galaxy S 2 or 3 you can have instant notification of received emails.