Exo Terra 100w Electronic On/Off Thermostat for Vivariums | PT2456

The ET 100w Electronic On/Off Thermostat (PT2456) is a straightforward, reliable temperature controller for reptile and exotic pet keepers who need accurate heat management in their vivarium or terrarium. Designed for use with heat mats, heat cables, and ceramic heaters up to 100w, it gives you consistent control over your enclosure's heating without the temperature swings associated with older mechanical designs.

Why temperature control matters

Reptiles are ectotherms — they depend entirely on external heat sources to regulate their body temperature. Getting the thermal gradient right inside your terrarium, whether you're keeping a desert species or a tropical one, is one of the most critical factors in keeping them healthy. A thermostat doesn't just maintain heat; it also prevents dangerous overheating during warm summer conditions and guards against undercooling on cold nights.

Electronic accuracy over mechanical guesswork

This thermostat uses an electronic Triac switch to hold temperature at your chosen setpoint with significantly greater precision than conventional mechanical thermostats. Temperature swings in the terrarium are virtually eliminated, giving your animals a stable and consistent environment to thermoregulate within.

Simple setup, sensible design

• Compatible with heat mats, heat cables, and ceramic heaters
• Red LED indicator lights when the heating device is active and switches off once the target temperature is reached
• Recessed control dial reduces the risk of accidental temperature changes when handling the unit
• Waterproof remote sensor suitable for high-humidity terrariums and aquatic environments

Setting it up correctly

Place the remote sensor in the zone you want to monitor — typically the warm end of the enclosure — and set the dial to your target temperature. Before use, research the preferred optimum temperature range (POTR) for the specific species you keep, so you can build a gradient that allows natural thermoregulatory behaviour.

A clean, no-fuss thermostat that handles the fundamentals well. For keepers who want reliable on/off control with accurate electronic switching and a sensor built for demanding environments, the PT2456 is a dependable addition to any vivarium setup.