U UNNI CO2 Monitor for Home, 3 Adjustable Volume for Alerts & 3 Adjustable Backlight, Photoacoustic Sensor for Temperature Humidity & Indoor Air Quality Monitor

Features

• CO2 MONITOR, SWITCH C/F Great item for any home to monitor the weather and air quality Real-time CO2 value, temperature and humidity, CO2 history chart, CO2 Concentration range, 3 Adjustable Volume for Alarm Setting & 3 Adjustable Backlight, Max/Min Data, Low battery indicator.
• HIGH-PRECISION SENSIRION CO2 SENSOR Equipped with Swiss-made Photoacoustic Sensor provides precise and reliable readings, which gives you peace of mind about the air in your home. CO2 detection range4005000PPM,accuracy+/- 5% + 50PPM. Temperature range: 14.2F ~ 122F, Humidity range: 20% to 95 %.
• IMPROVE VENTILATION Very useful for high concentration of poor air quality and cooking indoors and it will indicate to open a window/door to refresh the area to get the levels lower. CO2 monitor for Home, RV, Grow Tents.
• INDOOR AIR QUALITY MONITOR - Detect rise and decrease in CO2 level, perfect for anyone wanting to monitor air quality Elevated CO2 can cause symptoms like headaches, drowsiness, allergies and difficulty concentrating, to keep an eye on air quality at home or work
• USB POWERED OPTION & BATTERY BACKUP & ADJUSTABLE BACKLIGHT It is plugged in which allow the multi brightness display to stay on all the time, if you prefer. Either set it on tabletops, or mount it on the wall. 3 x AAA Battery(not included) for Backup & outdoor manual calibration.
• calibration process:Place the device in a standard calibration environment of 400PPM,Press and hold the ALERT button, and power on the device or install the battery,The device will sound "Bi-BI" and the screen will display the "CAL" character and keep blinking,After three minutes of calibration, the "PASS" character will be displayed. Power off and power on the device.