Indoor Temperature & Humidity Sensor Xiaomi MJWSD05MMC Freestanding

The Xiaomi MJWSD05MMC Indoor Temperature & Humidity Sensor is a freestanding monitor that displays date, time, temperature, humidity and a comfort indicator on a large LCD screen. Equipped with an industrial-grade Swiss Sensirion digital sensor, it provides frequent updates and precise readings to help track indoor climate conditions. The device runs on a CR2450 button cell battery and can be placed on a table or mounted on a wall using the included stand and adhesive.

Advantages

The large 62.6 x 53.2 mm LCD segment display shows six types of information for easy readability. The high-precision sensor detects temperature changes as small as 0.1 °C and humidity changes down to 1% RH. Ultra-low power consumption with a CR2450 battery yields long standby time. The monitor can switch its main display between temperature, humidity and time with a single button press. Built-in comfort-level icons provide an intuitive indication of indoor conditions, and the unit supports Bluetooth Mesh connection to the Xiaomi Home app for data sync and automation.

Suitable for

• Monitoring living rooms, bedrooms and studies
• Tracking bathroom or kitchen humidity
• Integrating with Xiaomi Home for automation (heater, humidifier)
• Keeping records of indoor climate for family health

Key specifications

• Model: Xiaomi MJWSD05MMC (MJWSD05MMC / MPN BHR9041GL, EAN 6941812797228)
• Display: 62.6 x 53.2 mm LCD segment display, built-in display
• Sensor: Swiss Sensirion high-precision digital temperature and humidity sensor
• Accuracy: temperature resolution 0.1 °C; humidity resolution 1% RH
• Power: CR2450 button cell battery, ultra-low power consumption (standby up to ~1.5 years, varies by use)
• Dimensions: 79.6 x 70.2 x 14.5 mm
• Weight: 0.072 kg
• Mounting: freestanding with included stand; wall-mountable with adhesive
• Connectivity: Bluetooth Mesh (works with Xiaomi Home app for data sync and automation)

How to use

Place the sensor on a stable surface or attach it to a wall using the supplied double-sided adhesive. Install a CR2450 battery, then briefly press the upper-right button to cycle the main display between temperature, humidity and time. The display refreshes approximately every 6 seconds to show current readings. To synchronise historical data and enable automation, add the device in the Xiaomi Home app and connect it via a Bluetooth Mesh gateway. Configure desired temperature and humidity thresholds in the app to trigger other Xiaomi smart devices such as heaters or humidifiers.

Recommendations

Position the sensor away from direct sunlight, heating sources or steam to ensure accurate readings; mount it at typical living height in the room for representative measurements. Replace the CR2450 battery when app notifications or display indicators show low power.