TempPro TP50 Digital Hygrometer (2 pack)
A simple, low cost humidity check for two rooms, without an app, alerts or backlight.
The short version
- Homes checking whether a humidifier or dehumidifier is needed
- Nurseries, basements, closets or a greenhouse where a quick glance is enough
- You want to check readings from your phone or get alerts
- You need to read it in a dark room
- You need logged history or lab level precision
What owners like
- Works the moment the battery goes in
- Easy to read comfort face for a quick dry or humid check
- Cheap enough to put one in several rooms
- Long battery life, with owners citing over a year on one AAA
Common complaints
- No backlight, so it cannot be read in the dark
- No app, alerts or stored history beyond daily highs and lows
- Not precise enough for humidors or wine storage, per one review
Based on TempPro's product page, The Weather review and the Test Measure Inspect guide. Neither review shows its own side by side accuracy test..
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
A pair of small battery powered indoor thermometers that also show humidity, once sold as ThermoPro and now sold under the TempPro name as the TempAir CORE TP50.
- Comfort indicator shows Dry, Comfortable or Wet at a glance
- Records daily high and low temperature and humidity
- Stands on a fold out stand, sticks to metal with a magnetic back, or hangs on a wall
- Maker says it can be checked and calibrated with a salt test
- No wireless connection, nothing to pair
A simple, low cost way to check whether a room is too dry or too humid, and the 2 pack lets you cover two rooms. It has no app, alerts or backlight and only keeps daily highs and lows, so pick a Bluetooth model if you want history or remote checks.
How it compares
Specs
- Temperature range
- -58 to 158°F (-50 to 70°C)
- Temperature accuracy
- ±1°F (±0.5°C)
- Humidity range
- 10% to 99% RH
- Humidity accuracy
- ±2% from 30% to 80% RH, otherwise ±3%
- Refresh rate
- Every 10 seconds
- Display
- LCD, about 2 5/16 in, no backlight
- Power
- 1 AAA battery per unit
- Size
- 3 1/8 x 2 5/8 x 1 in (79 x 66 x 24 mm)
- Warranty
- 1 year, extendable to 3 years with registration
Questions
Is the TempPro TP50 the same as the ThermoPro TP50?
Yes. TempPro sells the TP50 under its new name and says orders may still arrive in packaging with the previous brand name.
How accurate is the TP50 hygrometer?
The maker lists ±1°F for temperature and ±2% RH between 30% and 80% humidity, ±3% outside that range.
Can the TP50 be calibrated?
TempPro's product page says it can be calibrated using the salt test method. One review states otherwise, so check the manual for the current steps.
What battery does the TP50 use?
One AAA battery per unit.
Sources
- TempPro: TempAir CORE TP50 Digital Indoor Thermometer and Humidity Gauge
- The Weather: ThermoPro TP50 Review
- Test Measure Inspect: ThermoPro TP50 Digital Hygrometer Indoor Thermometer review
- Amazon: TempPro TempAir Digital Hygrometer Indoor Thermometer, 2 Pack
Researched 2026-10-02. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.
