ThermoPro TP351 Bluetooth Thermometer Hygrometer Review

A Bluetooth thermometer hygrometer with a 260-foot range, app readings, and data logging for greenhouse temperature and humidity checks.

Seller pricing varies Updated May 17, 2026

Bottom line

The ThermoPro TP351 gives greenhouse gardeners a small Bluetooth sensor for checking temperature and humidity from a nearby phone.

ThermoPro TP351 Bluetooth thermometer hygrometer with app screen

What this review covers

A small Bluetooth monitor is useful when a gardener wants readings near benches, trays, and humid corners. The TP351 fits routines where a nearby phone check can guide shade, venting, fan angle, and watering.

The upside

  • The compact sensor is easy to hang or place near plant benches.
  • Bluetooth readings let a phone show current conditions during nearby checks.
  • Data logging helps turn warm spells into visible history.

The tradeoffs

  • Bluetooth range depends on walls, distance, and phone placement.
  • Fan, vent, shade, and water changes still come from the gardener.

Fit and feel

Good match:

This monitor fits gardeners who want a small Bluetooth sensor for a greenhouse, plant room, seed-starting shelf, or covered propagation area.

What to know:

Bluetooth range depends on the building, door placement, phone location, and nearby materials. Keep the sensor away from direct spray and direct sun pockets so the reading stays tied to the plant area.

Check ThermoPro TP351 Bluetooth Thermometer Hygrometer

Open the current merchant listing if the buyer fit and tradeoffs still line up.

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Full review

A small sensor for nearby checks

The ThermoPro TP351 is a compact Bluetooth thermometer hygrometer for temperature and humidity readings. In a greenhouse, that kind of sensor can live near a bench, tray stack, plant shelf, or humid corner.

The phone view gives the reading a little extra context during daily rounds. A gardener can check the app, look at the plants, and decide whether shade, airflow, venting, or water needs attention.

Data history adds useful context

Greenhouse readings change through sunny afternoons, cool evenings, and damp mornings. Data logging helps show those changes as a visible record.

That record can be helpful when a gardener is learning how a greenhouse behaves. A warm shelf, a damp corner, or a dry bench becomes clear when the reading history is visible.

Good match

This monitor fits gardeners who want a small Bluetooth sensor for a greenhouse, plant room, seed-starting shelf, or covered propagation area.

What to know

Bluetooth range depends on the building, door placement, phone location, and nearby materials. Keep the sensor away from direct spray and direct sun pockets so the reading stays tied to the plant area.