Oh, note that you may be offered a device that has a different voltage rating. As long as the voltage rating is higher than the one you're replacing, you're OK. The major consideration is probably the type of connections it has, try to get the same type -- and remember how the old one was connected! The temperature range is probably not too critical. Something rated for a higher maximum temperature would be better than one rated for a lower temp though. If you live in a place that gets cold, check out the minimum rated temp too. The ones I saw were rated for -40C (-40F).