Benefits from the alarms, including a buzzers and for immediate pollution warnings, complemented by function his indoor air monitor accurately assesses intemperature & humidity, and formaldehyde ( HCHO), It is necessary to know the air where you live, can help you understand indoor air Just presses power button, keep the device turned on and it will take the measurement automatically The lithiums battery provide power, standbys time can last for 6hours ( supplied with USB cable and With its small size designs and a rechargeable battery, making comprehensive air monitor accessible Equipped with a fast-responding and sensitive highs chip, the air monitor can precisely the weak current during electrochemical reactions color & voice alerts keep you inform of current air conveniently, Manufacturer: Kaeltsyn