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Black rectangular digital hygrometer with white backlit LCD display and comfort indicator

KJMOPRO JH-MC41S-1-B Digital Thermometer Hygrometer Black

SKU CH-NSTX-Z7PR4

Monitors indoor temperature and humidity with a backlit LCD and colour-coded comfort indicator

  • TypeBattery
  • ColorBlack
  • Easy night reading with white backlit LCD that stays on for 10 seconds
  • Instant comfort awareness via red, green and blue humidity indicators
  • Flexible placement using table stand, wall hole or magnetic mount
  • Quick unit switching between Celsius and Fahrenheit at the press of a button
  • Reliable monitoring from -20 °C to 70 °C with ±1.0 °C accuracy

Indoor Climate Monitor

The KJMOPRO JH-MC41S-1-B is a digital thermometer hygrometer designed for indoor environments such as homes, offices, greenhouses and wine cellars. It measures temperature from -20 to +70 °C and humidity from 10% to 99% RH, giving users a clear view of ambient conditions. The unit includes two AAA batteries for immediate operation.

Sustained Monitoring Behaviour

The device continuously tracks temperature with an accuracy of ±1.0 °C and humidity within ±5% RH, updating readings at a 0.1 °C resolution. A white backlight activates for 10 seconds at the touch of a button, allowing checks in low light without constant power draw. Max and min records capture extremes over time rather than a single snapshot.

Mounting Flexibility and Build

Three installation methods are provided: a table stand, a hanging hole and a magnetic bracket, so the monitor can sit on a shelf, hang on a wall or attach to a metal surface. The black casing houses a colour-coded comfort indicator that shifts between red, green and blue to show dry, comfortable or humid air at a glance. A simple °C/°F switch sets the preferred unit.

Highlights

  • Easy night reading with white backlit LCD that stays on for 10 seconds
  • Instant comfort awareness via red, green and blue humidity indicators
  • Flexible placement using table stand, wall hole or magnetic mount
  • Quick unit switching between Celsius and Fahrenheit at the press of a button
  • Reliable monitoring from -20 °C to 70 °C with ±1.0 °C accuracy

Specifications

TypeBattery
ColorBlack

Questions about this item

How much heat does the JH-MC41S-1-B generate when running continuously all day?

The device produces no noticeable heat because it is a passive sensor powered by two AAA batteries with no active cooling or heating elements.

What must I already own for the JH-MC41S-1-B to work right out of the box?

Nothing extra is required; the package includes the hygrometer, two AAA batteries and a manual so it operates immediately.

Can the JH-MC41S-1-B sit next to my older analog thermostat without interference?

Yes, it uses no wireless signals — just a battery-powered LCD — so it will not affect or be affected by nearby analog devices.

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