<p>It adopts a digital temperature and humidity sensor, high precision, stable performance, anti-interference ability, low consumption, and can provide a long service time.</p> <p> LCD screen, you can clearly see the amount of electricity, CO2 value, TVOC value, HCHO value, temperature and humidity.</p> <p>Celsius and Fahrenheit switchable, and the alarm sound can be on or off according to your demands.</p> <p>Equipped with the environmental quality judgment function, it will display the appropriate level according to the measurement value.</p> <p>Built-in 1800mAh lithium battery, easy to charge with USB cable.</p> <p>This is a kind of high-quality air quality detector, which adopts professional electrochemical detection module, high precision, stable performance, anti-interference ability, low consumption, and can provide a long service time. Accurately detect CO2. Big screen, you can clearly see the amount of electricity, CO2 value, TVOC value, HCHO value, temperature and humidity. You can try it.</p> <p>When the battery is too low, the battery frame flashes to remind you to recharge.</p> <p>Specs:</p> <p>Name: air quality meter</p> <p>Display: LCD display</p> <p>Battery: 1 x built-in lithium battery, 3.7V, 1800mAh (Included)</p> <p>CO2 Measurement-Range: 350ppm-2000ppm</p> <p>TVOC measurement range: 0.000 mg \/ m and sup3; -2000 mg \/ m and sup3;</p> <p>HCHO measurement range: 0.000 mg \/ m and sup3; -1000 mg \/ m and sup3;</p> <p>Temperature Measurement-Range: 0 Celsius-90.0 Celsius (32 Fahrenheit-194 Fahrenheit), +\/- 1 Celsius \/ +\/- 1 Fahrenheit</p> <p>Craft Supplies: Electric</p> <p>Model Number: JD-3002 Air Quality Meter</p> <p>Gas type: CO</p> <p>With LCD Screen Or Not: Yes</p> <p>Measurement range: 350ppm-2000ppm</p> <p>color: Black</p> <p>Material: plastic</p> <p>Package Contents:</p> <p>1 x Air Quality Tester</p> <p>1 x USB cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>