4 In 1 Smart Air Quality Tester CO2 Meter Temp Humidity LCD
Meet the 4 In 1 Smart Air Quality Tester – a portable CO2 meter with LCD that gives you real-time measurements of CO, CO2, temperature, and humidity. Designed for home, office, school, warehouse, and agricultural settings, this compact device helps you spot poor air quality before it impacts health, comfort, or productivity. Its large backlit display, built-in battery, and easy alarm system make it simple to monitor environments on the go.
Choose between the two models to fit your needs:
- PTH-9E — 4-in-1 detection: CO, CO2, temperature, and humidity. Wide CO2 range (400–5000 ppm) with high accuracy for reliable indoor air assessments.
- PTH-9D — 3-in-1 detection: CO, temperature, and humidity. Perfect for safer CO monitoring in spaces where CO2 readings are less critical.
Key benefits include:
- Real-time, 4-in-1 monitoring with a large, clear LCD display and backlight.
- High-accuracy electrochemical sensor paired with a fast, efficient chip for reliable readings (CO up to 500 ppm; CO2 up to 5000 ppm in the E model).
- Audible and color-coded alarms (Green/Yellow/Red) to alert you when levels require action, helping you ventilate or adjust airflow promptly.
- Portable, lightweight design with a built-in 2400mAh rechargeable battery for up to extended use on the go. No frequent battery changes needed.
- Low maintenance with automatic monitoring and no startup calibration required.
Product specifications
- Model: PTH-9E / PTH-9D
- Sensor type: Electrochemical sensor
- Measurement objects: CO, CO2, temperature, humidity (PTH-9E); CO, temperature, humidity (PTH-9D)
- CO measurement range: 0–500 ppm (±5% or ±10 ppm)
- CO2 measurement range: 400–5000 ppm (±5% or ±50 ppm) – only in PTH-9E
- Temperature range: 0°C–50°C (±1.5°C) / 32°F–122°F (±2.7°F)
- Humidity range: 20%–80% RH (±5% RH)
- Power supply: Built-in Li-ion battery (3.7V, 2400mAh); Type-C input (5V = 1A)
- Display: Large LCD with backlight
- Alarm: Green/Yellow/Red indicators with audible alarm
- Size (each unit): 98 × 90 × 40 mm
- Weight (device): 201 g (PTH-9E) / 196 g (PTH-9D)
- Package size (approx.): 14 × 10 × 5 cm
- Origin: Mainland China
- Brand: meterk
- Certification: CE
- Display type: LCD with backlight
- Other: No calibration at startup; automatic monitoring
Package includes:
- 1 × Air Quality Detector
- 1 × Type-C Cable
Warnings / reminders
- No calibration is required at startup; the device performs automatic monitoring.
- Keep the detector away from moisture and extreme conditions to maintain accuracy.
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Please note: All electronic and mechanical equipment, devices and machines sold to EU countries are CE certified and carry a two year warranty.
