| US$1.00-10.00 | 3,000 Pieces (MOQ) |
| Power source | 2xAA LR6 battery |
| Concentration range displayed | 10-550PPM |
| Accuracy of Digital Display | A) 30PPM ±10PPM B) 50PPM ±10PPM C) 100PPM ±15% D) 300PPM ±15% |
| Quiescent current: | < 35uA |
| Alarm current | <70mA |
| Working condition: temperature | -10ºC~+45ºC |
| Relative humidity | 0-93% |
| Audible alarm | >85dB (3 meters from the unit) |
| Dimension | 120*74*31MM |
| Weight | 125G |
