Thermometer + Hygrometer with Probe — Inside-Nest Monitor

An ambient-only thermometer reads the room, which is fine for open arenas where the air mixes freely. It stops being accurate the moment you seal the formicarium with a lid, a connector or plugged tubes, insulate it with foam or a cabinet, add a heat source on one side, or hydrate a chamber and lift the local humidity. In each case the nest interior runs measurably different from the room, and the probe is the only way to know what that difference is.

Keepers with sealed or insulated formicaria, anyone on a heating mat who wants to confirm the real nest temperature, and keepers of hydration-dependent tropical species where interior humidity is the entire reason you are measuring. If you only run open, well-ventilated arenas at room temperature, the cheaper no-probe 2-in-1 may be enough — but the probe handles both cases when you are unsure.

Run the probe cable through a connector port or under the arena lid into the nest, and place the sensor where it matters, usually the brood chamber or the warmest part of the nest. Tape the cable along its route to keep things tidy; the display unit stays outside on the included adhesive or a nearby surface. Calibrate now and then against a known-good reference such as a room thermometer or a glass of room-temperature water. The sensor itself is stable; cable kinks and connector wear are the usual failure points. The cable runs roughly 1 metre, enough for any single-formicarium setup, and a passive extender from any electronics shop adds length.

Keep the display dry and wipe it with a dry cloth. The probe sensor is splash-resistant but not waterproof, so keep it in the nest air space rather than in the hydration chamber or standing water. Coil the cable loosely for storage instead of creasing it in one spot. Replace the coin-cell battery when readings drift.

A heating mat, to actively control exactly what the probe reads. A hydration chamber for humidity-dependent species whose nest moisture you can now watch directly. The no-probe 2-in-1 for a second, open arena. Tropical and hydration-dependent species from our live ant catalogue.

How long is the probe cable?
Roughly 1 metre, long enough for any single-formicarium setup. Add a passive extender from any electronics shop for more reach.

Can the probe go in water?
The sensor is splash-resistant, not made for submersion. Keep it in the air space of the nest, not in the hydration chamber.

Why does the probe read differently from a separate room thermometer?
Because they measure different places. The probe sees inside the nest; a room thermometer sees the air around your desk. Close readings mean a well-ventilated formicarium; a big gap means it is sealed or actively heated.

Probe or no-probe — which do I buy?
Open, well-ventilated arenas: no-probe, cheaper. Sealed formicaria, hydrated nests and heat-mat setups: probe. Unsure? The probe handles both.

Is the battery included?
Yes, a replaceable coin-cell comes fitted, so it works on arrival.

Do you ship outside the EU?
Yes. Out of Poland with tracked delivery across the EU, the UK and worldwide.

A note on care: each item is built for a specific job — please use it only as intended. Responsibility for correct, safe use rests with the keeper; ANTonTOP accepts no liability for misuse or damage from improper use.