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Ten small black round digital thermometer hygrometers with LCD screens

Rojuna Ro-201 10-Pack Mini Thermometer Hygrometer Black 1.7 in

SKU CH-QTRS-MPYHQ

Ten compact meters track temperature from -58 to 158 °F and humidity from 10 to 99 %RH, updating every ten seconds

  • Battery runtimeAlkaline
  • Measuring range-58 degrees fahrenheit to 158 degrees fahrenheit
  • Operating conditions-58 degrees fahrenheit / 158 degrees fahrenheit
  • Storage conditions-58 degrees fahrenheit to 158 degrees fahrenheit
  • Product colorBlack
  • Product dimensions1.7 in × 1.7 in × 1.7 in
  • 10-pack lets you monitor every room at once
  • Mini 1.7 in design fits jars, fridges and tight spaces
  • Shows temperature in Celsius or Fahrenheit with a paperclip press
  • Reads -58 to 158 °F and 10–99 %RH every 10 seconds
  • ±2 °F temperature and ±5 %RH humidity accuracy

Compact ten-pack for distributed monitoring

The Rojuna Ro-201 supplies ten identical mini hygrometer thermometers in black. Each unit measures 1.7 in on every side and weighs approximately .19 kg. The pack is aimed at anyone who needs simultaneous temperature and humidity readings across multiple small spaces such as greenhouses, fridges, mason jars or instrument workshops.

Factory-fitted LR44 cells and C/F switching

Every meter ships with a 1.5 V LR44 button cell installed. A recessed contact marked C/F lets you toggle between Celsius and Fahrenheit by pressing a paperclip through the case hole. Readings refresh every 10 seconds across a range of -58 to 158 °F with stated accuracy of ±2 °F and ±5 %RH.

Check panel cut-out and mounting depth

The units are designed for a 42 mm diameter panel hole and protrude roughly .5 in behind the mounting surface. Verify that each intended location offers that clearance and a flat PVC-compatible surface. No adhesive or screws are included, so plan your own retention method before ordering.

How it compares

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

Price $24.99
Typical for this category: the median of 925 items is $23.99.

Specifications

Product
Brand nameRojuna
Part numberRo-201
Product colorBlack
Power
Battery runtimeAlkaline
Size & build
Product dimensions1.7 in × 1.7 in × 1.7 in
Product weight0.19 kg
Environment & compliance
Operating conditions-58 degrees fahrenheit / 158 degrees fahrenheit
Storage conditions-58 degrees fahrenheit to 158 degrees fahrenheit
More details
Measuring range-58 degrees fahrenheit to 158 degrees fahrenheit

Questions about this item

How often will the LR44 button cells need replacing?

Each unit runs on one 1.5 V LR44 cell; battery life is listed as alkaline with no hour rating given.

What is the slowest refresh that still catches rapid humidity swings?

The sensor updates every 10 seconds, so changes faster than that interval may be missed.

Does the LCD stay readable and the plastic hold up when the meter sits at 70 °C all day?

Operating range reaches 70 °C (158 °F) and the PVC case is rated for the same span, so continuous use at that temperature is within spec.

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