Exo Terra Digital Combometer (thermo/hygro)
Temperature and humidity, both from one remote sensor. The Exo Terra Digital Combometer is a battery-powered digital thermo-hygrometer with a combined remote sensor, so you get one probe reading both values rather than running two separate gauges in the enclosure.
Key features
- Combined remote sensor — one probe measures both temperature and humidity at the point you place it.
- Wide temperature range — reads 0–70°C (32–158°F), covering everything from a cool hide to a hot basking zone.
- Wide humidity range — reads 10–99% relative humidity, suited to arid and humid setups alike.
- Two mounting options — hook-and-loop fastener for the outside of any terrarium, or a rail mount that slides onto an Exo Terra Compact Top canopy.
- Digital display — single-button operation with a min/max memory function to track swings since you last checked.
Specifications
| Measurement type | Digital thermometer and hygrometer, combined remote sensor |
|---|---|
| Temperature range | 0–70°C (32–158°F) |
| Humidity range | 10–99% relative humidity |
| Power source | 1 x AG13 / LR44 button-cell battery |
| Mounting | Hook-and-loop fastener, or rail mount for Exo Terra Compact Top |
Exo Terra does not publish a numeric accuracy or resolution figure, probe cable length, or unit dimensions for this model, so those aren't stated here rather than estimated.
Suitable for, and not suitable for
Suited to monitoring temperature and humidity in reptile and amphibian terrariums, using a single sensor point rather than separate thermometer and hygrometer units. Not a controller — it reads conditions but doesn't switch heating or misting equipment on or off.
Care and maintenance
Replace the AG13 / LR44 button-cell battery when the display dims or stops updating. Keep the sensor away from direct water spray unless the manufacturer states it's rated for it.
Goes well with
- An Exo Terra Compact Top canopy, if you want to use the rail-mount fitting
- A separate thermostat, since this unit monitors conditions but doesn't control heating equipment
- A second Combometer, if you want to compare a cool zone against a warm zone at the same time
Warranty and delivery
Covered by your rights under Australian Consumer Law. Ships standard.
Common questions
Does this control my heat lamp or humidifier automatically?
No — it's a monitoring device only. Pair it with a separate thermostat or hygrostat if you need automatic control.
Can I use it in both a dry desert terrarium and a humid rainforest terrarium?
Yes — the published range covers 10–99% relative humidity and 0–70°C, wide enough for both setups.
What battery does it take, and how do I know when to replace it?
One AG13 / LR44 button-cell battery. Replace it when the display dims or stops updating.
How do I mount the sensor and the display?
The unit mounts with an included hook-and-loop fastener on any terrarium, or with a rail mount if you're using it on an Exo Terra Compact Top canopy.




