We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver square hygrometer with LCD face icons and Bluetooth range 260ft

TempPro TP357 Bluetooth thermometer 260ft range ±1° ±2%

SKU CH-56Q8-V5R9B MPN TP357

Monitors temperature and humidity with ±1° accuracy, 260ft Bluetooth range, and a year of graphed data

  • TypeThermometer Body, Batteries
  • ColorClassical Silver
  • FeaturesThermometer Body, Batteries, ±1 Fahrenheit/Celsius and ±2%
  • Measurement Range32 degrees_fahrenheit to 140 degrees_fahrenheit
  • Measurement Accuracy±1 Fahrenheit/Celsius and ±2%
  • Battery LifeAlkaline
  • Monitors temperature and humidity with ±1° and ±2% accuracy
  • Bluetooth range reaches 260 feet for whole-home coverage
  • Face icons show comfort level at a glance
  • Smart app sends alerts when conditions leave your set range
  • Stores up to one year of data with trend graphs

Indoor climate monitoring

The TempPro TP357 is a Bluetooth thermometer and hygrometer designed for home environmental tracking. It measures temperature from 32 to 140 degrees Fahrenheit and humidity with a comfort indicator. The device connects to a smartphone app for remote monitoring and alerts. Data history is stored for up to one year for trend analysis.

Best for fixed locations needing alerts

This unit suits homeowners monitoring rooms, basements, or wine cellars who want phone notifications when conditions drift. It is not for users requiring a handheld probe for spot-checking food or HVAC vents. Buyers needing a display visible across a large room without a phone should look elsewhere. The sensor refreshes every 10 seconds for timely updates.

260-foot Bluetooth range

The wireless link reaches 260 feet or 80 meters with no obstructions, deciding whether whole-home coverage is possible. Walls and floors will reduce this distance in practice. Accuracy is rated at ±1 degree for temperature and ±2% for humidity. The device operates on alkaline batteries within the same 32 to 140 degree range.

Highlights

  • Monitors temperature and humidity with ±1° and ±2% accuracy
  • Bluetooth range reaches 260 feet for whole-home coverage
  • Face icons show comfort level at a glance
  • Smart app sends alerts when conditions leave your set range
  • Stores up to one year of data with trend graphs

Specifications

BrandTempPro
TypeThermometer Body, Batteries
ColorClassical Silver
Part NumberTP357
FeaturesThermometer Body, Batteries, ±1 Fahrenheit/Celsius and ±2%
Measurement Range32 degrees_fahrenheit to 140 degrees_fahrenheit
Measurement Accuracy±1 Fahrenheit/Celsius and ±2%
Battery LifeAlkaline
Operating Environment32 degrees_fahrenheit / 140 degrees_fahrenheit
Storage Environment32 degrees_fahrenheit to 140 degrees_fahrenheit
Dimensions3 in x 3 in x 0.2 in
Weight35 grams

Questions about this item

Which smartphone operating system is required to pair the TP357 thermometer?

The ThermoPro Sensor app works with iOS and Android devices; install the app, enable Bluetooth, and follow the in-app pairing steps to connect the sensor.

Can the TP357 operate in the same temperature range as my existing 32–140 °F hygrometer?

Yes, the TP357 is rated for 32 °F to 140 °F operating and storage environments, matching that range exactly.

How do I verify the ±1 °F and ±2 % accuracy after setup?

Place the unit beside a calibrated reference; readings should stay within one degree Fahrenheit or Celsius and two percent relative humidity, and the app graph updates every 10 seconds for comparison.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.