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
Six small black round digital hygrometer thermometers with LCD screens

Rojuna 6-Pack Mini Hygrometer Thermometer Digital LCD Black

SKU CH-AV99-1GWJN

Six mini digital gauges track temperature and humidity indoors or outdoors with °C/°F switching

  • ColorBlack
  • Measurement Range-58 degrees_fahrenheit to 70 degrees_celsius
  • Battery LifeAlkaline
  • Operating Environment-58 degrees_fahrenheit / 70 degrees_celsius
  • Storage Environment-58 degrees_fahrenheit to 70 degrees_celsius
  • Dimensions3 cm x 3 cm x 2 cm
  • Monitors humidity and temperature every 10 seconds
  • Switches between Celsius and Fahrenheit with a paperclip
  • ±2 °C temperature accuracy and ±5 % RH humidity accuracy
  • Six compact sensors cover multiple rooms at once
  • Measures from -50 °C to 70 °C and 10 % to 99 % RH

Six-pack mini hygrometer thermometer

This Rojuna set provides six compact digital instruments that display temperature and relative humidity on a small LCD. Each unit measures 1.7 by 1.7 by 0.5 inches and weighs only eight grams, making them easy to position in multiple rooms, a greenhouse, a reptile enclosure or a vehicle. The black PVC housings are designed for indoor or outdoor use within the stated temperature limits.

Sustained monitoring behaviour

The sensors refresh readings every ten seconds, giving a continuous view of conditions rather than a single snapshot. Temperature accuracy is rated at ±2 °F (±1 °C) across a range of -58 to 158 °F (-50 to 70 °C). Humidity is reported from 10 to 99 %RH with an accuracy of ±5 %RH, and the device operates on a single 1.5 V LR44 alkaline button cell.

Pre-installation checks

Verify that the mounting location can accommodate a 42 mm panel hole if you plan to recess the units. Confirm you have a paperclip or similar tool to reach the C/F switch hole on the case for selecting Celsius or Fahrenheit. Ensure the operating environment stays within the -58 to 158 °F limits and that the 1.5 V button cell is available for replacement when needed.

Highlights

  • Monitors humidity and temperature every 10 seconds
  • Switches between Celsius and Fahrenheit with a paperclip
  • ±2 °C temperature accuracy and ±5 % RH humidity accuracy
  • Six compact sensors cover multiple rooms at once
  • Measures from -50 °C to 70 °C and 10 % to 99 % RH

Specifications

BrandRojuna
ColorBlack
Part NumberRo@3492232
Measurement Range-58 degrees_fahrenheit to 70 degrees_celsius
Battery LifeAlkaline
Operating Environment-58 degrees_fahrenheit / 70 degrees_celsius
Storage Environment-58 degrees_fahrenheit to 70 degrees_celsius
Dimensions3 cm x 3 cm x 2 cm
Weight8 grams

Questions about this item

How much power does each mini hygrometer thermometer draw when running continuously?

Each unit operates on a single 1.5 V LR44 button cell and updates readings every 10 seconds, so power draw is minimal and the alkaline battery lasts for extended daily use.

What does the buyer need to have ready before using the six hygrometer thermometers?

You only need six LR44 button cells — one for each device — and a paperclip to press the recessed C/F switch if you want to change between Celsius and Fahrenheit.

Will these hygrometer thermometers fit the same 42 mm panel cut-outs as my older gauges?

Yes, each unit is designed for a D42 mm installation hole, matching the cut-out size used by many legacy round gauges.

Also in this aisle

People compared these

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