The Ermenrich QM10 Air Quality Meter is a portable handheld device designed to analyze indoor air composition. It focuses on detecting elevated levels of harmful substances and monitoring the microclimate.

• Sensors: Four sensors for measuring formaldehyde (HCHO), total volatile organic compounds (TVOC), temperature, and humidity.
• Temperature Measurement: From 0 °C to 50 °C.
• Humidity Measurement: From 20% to 90%.
• Air Quality Index (AQI): Five levels of air quality evaluation, from completely clean to highly polluted.
• Display: Large 3.2" color LCD screen with backlight for easier reading of measurements.
• Monitoring Mode: Continuous monitoring with three measurement speeds: 0.5 s, 1 s, and 2 s.
• Notifications: Alerts triggered based on safety limit thresholds for HCHO and TVOC.

The device features an automatic shutdown function to save battery power and detects over 23 types of hazardous gases. It supports sensor calibration for TVOC during first use and automatically every 12 hours.

The device operates with an integrated rechargeable 1500 mAh / 3.7 V battery, charged via USB Type-C. Its body is made of durable ABS plastic, while the buttons are made of soft silicone that feels pleasant to the touch.