Zilla Reptile Electronic Temperature Controller An on/off thermostat that works great with infra-red heat panels (Enerjoy), ceramic heaters (Pearlco's), under tank heaters (Ultratherm's) and incandescent heat/flood bulbs. Not for use with mercury vapor or fluorescent bulbs. Has an safety shut off at 110F or 43C. Temperature range of 60F - 105F. Plug in up to three heaters. One 4 foot probe and 4 foot cord. Combined wattage of up to 500 watts. Can be used with a timer for day/night cycle.