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Two small white rectangular sensors with hanging loops

TempPro TP351W-2 Bluetooth Thermometer Hygrometer 260FT 2 Pack

SKU CH-1PNC-6AQRV

Two wireless sensors track temperature and humidity up to 260 feet away, store two years of readings, and send alerts to a phone app

  • Battery runtime4 AAA batteries
  • Measuring range-4 degrees fahrenheit to 140 degrees fahrenheit
  • Operating conditions-4 degrees fahrenheit / 140 degrees fahrenheit
  • Storage conditions-4 degrees fahrenheit to 140 degrees fahrenheit
  • Product weight0.1 kg
  • Monitors conditions from 260 feet away via Bluetooth
  • Delivers ±0.5 °F and ±2 % RH accuracy with 10-second refresh
  • Stores two years of readings for export and analysis
  • App sends alerts, comfort index and battery status instantly
  • Compact 0.1 kg design with hanging loop suits any space

Dual Bluetooth Environment Sensors

This two-pack provides wireless temperature and humidity monitoring for home, greenhouse or hobby spaces. Each unit connects to a smartphone app via Bluetooth so you can view conditions remotely without wiring. The sensors suit anyone needing simultaneous readings in separate rooms or zones.

Replacing Standalone Analog Gauges

The jump is worthwhile when you want alert notifications, long-term trend graphs and data export without manually logging numbers. Built-in storage holds up to 2 years of history and the app charts hourly through yearly intervals. Accuracy reaches +/-0.5°F and +/-2% RH with a 10-second refresh rate.

Verify Bluetooth Range and Power Plan

Confirm that 260 feet line-of-sight covers the distance between your phone and the intended sensor locations; walls and floors will reduce effective range. Each device runs on 4 AAA batteries so plan for periodic replacement. Operating and storage limits sit at -4°F to 140°F.

How it compares

Measured against everything we stock in Digital Thermometers & Hygrometers, at today’s prices. Recalculated every night.

Price $30.99
Pricier than about 70% of the 925 comparable items (median $23.99).

Specifications

Product
Brand nameTempPro
Part numberTP351 W-2
Power
Battery runtime4 AAA batteries
Size & build
Product weight0.1 kg
Environment & compliance
Operating conditions-4 degrees fahrenheit / 140 degrees fahrenheit
Storage conditions-4 degrees fahrenheit to 140 degrees fahrenheit
More details
Measuring range-4 degrees fahrenheit to 140 degrees fahrenheit

Questions about this item

What size batteries does the TP351W-2 need and how many?

Each unit takes four AAA batteries, which are included in the pack.

How do I pair the sensor with the app and what step is often missed?

Insert the batteries, download the ThermoPro app, then enable Bluetooth on your phone; the sensor auto-connects, but users often forget to grant location permission so the app can scan.

When will I need to replace the batteries?

The app shows a battery indicator; swap all four AAA cells when the indicator drops low, typically after several months of 10-second refresh cycles.

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