Quality Meter 13-in-1 Indoor Quality Detects ₂ M6A1
No further than our Quality. Never be anxious about low. 【PM2.5 Data Color Warning】0-50: green; 51-100: yellow; 101-500: orange; greater than 151: red. If the PM2.5 reading is greater than 100, the 4-sound will be triggered, with sound every second.
Quality Meter 13-in-1 Indoor Quality Detects ₂ V1F3
No further than our Quality. Never be anxious about low. 【PM2.5 Data Color Warning】0-50: green; 51-100: yellow; 101-500: orange; greater than 151: red. If the PM2.5 reading is greater than 100, the 4-sound will be triggered, with sound every second.