4 in 1 Portable Gas Detector
Features:
- High-quality sensitive sensors, sensitive sensing, more accurate detection
- 2.0-inch black and white screen with backlight
- Audio, alarm light, vibration multiple alarms
- Automatic storage of alarm records
- Chinese/English switching
- Power on self-test
- With explosion-proof certification (China)
- 3.7V 2000mAh lithium battery power supply
