LSENLTY 4 in 1 PM 2.5 and PM 10 Air Quality Monitor-PTH-26P 【Smart Brightness Control】Press the brightness

【Smart Brightness Control】Press the brightness key to adjust or turn off the screen to save power

【Soft-Glow Backlit Display】Ensures clear and legible readings in all lighting conditions—whether during the day or in dark environments

【Smart Brightness Design】Three brightness levels adjustable by short-pressing the "☀" button

the alarm sounds for 10 seconds

Factory default is High volume

LSENLTY 4 in 1 PM 2.5 and PM 10 Air Quality Monitor-PTH-26P 【Smart Brightness Control】Press the brightness4 in 1 PM2. 5 and PM10 Air Detection: This multifunctional indoor air quality monitor detects four key indicators in the air: PM2. 5 (measurement range: 0 to 1000 g m), PM10 (measurement range: 0 to 1000 g m), temperature (measurement range: 10 C to 50 C 14 F to 122 F) and humidity (measurement range: 0% to 95% RH). Advanced Sensor: The PM2. 5 monitor is equipped with an advanced laser sensor. It maintains high precision readings for multiple air