Pymeter Digital Temperature Controller Dual Probe Reptile Thermostat Controlled Outlet for Terrarium Heat Mat Review (2026)

What the controller does

This is a plug-in thermostat and dual probe thermometer combined into one unit, built to switch a connected heat mat, heat cable, or similar low-wattage heater on and off automatically once the terrarium reaches a set temperature. Two waterproof probes let you place one sensor at the warm end and a second elsewhere in the enclosure, so you get two live readings on the display instead of relying on a single point. The outlet itself is rated for up to 10 amps and 1200 watts of input power according to the listing, and the unit runs on standard household current in the 85 to 250 volt AC range, which covers both 120V US outlets and higher voltage regions. It is designed primarily around reptile and amphibian heat mats rather than heat lamps or ceramic heat emitters.

Setting it up and reading the display

Setup means plugging the heat mat into the controller's outlet, plugging the controller into the wall, and taping both probes to secure points inside the enclosure, typically the basking surface and a cooler area. The controller lets you set separate on and off temperatures for the connected outlet, so the mat switches on once the tank drops to your low point and cuts off once it climbs back to your high point, keeping the range steady without constant manual adjustment. The digital display reads in 0.1 degree steps in either Fahrenheit or Celsius and is accurate to within about 1 degree of the true temperature, based on the manufacturer's manual. High and low temperature alarms can flag readings outside your expected range, which is useful for catching a probe that has slipped or a mat that has failed.

Things to check: installation, compatibility and handling

The main daily task is making sure both probes stay exactly where you placed them, since a probe that shifts against the glass or falls into substrate will report the wrong temperature and can cause the controller to run the mat longer or shorter than intended. Most keepers tape probes down with foil tape rather than trusting the adhesive that sometimes ships with them, since foil tape holds through humidity and heat better over months of use. The controller itself sits outside the enclosure and needs a dry, ventilated spot near an outlet. Because it only switches power on and off rather than adjusting wattage gradually, mats connected to it will click on and off around the set points rather than holding a perfectly constant line, which is normal for this style of thermostat.

Trade-offs against other reptile thermostats

Against the Inkbird IPT-2CH, which adds WiFi monitoring and app alerts on top of similar dual probe control, this Pymeter unit is simpler and more affordable but leaves you checking the display in person rather than getting a phone notification if something goes wrong. Against basic single-probe thermostats like the JumpStart MTPRTC, the second probe here is a real advantage since it gives a sanity check reading rather than trusting one sensor alone. Digital thermometer and hygrometer combo units without an outlet, such as many budget remote-probe displays, only tell you the temperature and leave the actual heating decision to you, while this controller automates that switching. The clearest limitation across all of these on-off style thermostats is that none of them dim or ramp power the way a proportional controller does.

Who this suits and who needs something else

This controller fits keepers running a heat mat or heat cable who want automatic cutoff and a second temperature reading without paying for app connectivity or a full proportional dimmer. It is a sensible upgrade from a mat plugged straight into the wall, since it prevents the mat from running unchecked if the enclosure overheats. Anyone planning to control a basking lamp, ceramic heat emitter, or deep heat projector should confirm the wattage stays under the 1200 watt, 10 amp rating and consider whether a lamp dimmer style thermostat suits that load better than an on-off outlet switch, since some lamps prefer smoother power control. Keepers who want remote monitoring from a phone should look at a WiFi-enabled model instead, since this unit has no app or notification feature.

Frequently asked questions