reason i ask, is im making a teleduino controlled home system, i want to be able to turn on and off our air conditioners and such, like for instance, when we are out in the summer and come home, have the a/c off while out, and about 20minutes before coming home turn them on, but since a/c's use high amps, i cant seem to find a relay powerful enough to handle it, all the arduino relay boards ive seen are either 10a, or 15a,