- Employ original imported high-precision sensor.
- Four random gas sensors can be combined freely.
- The gas concentration unit PPM and mg/m3 can be shifted quickly.
- Ultra-high buzzer alarm sound, alarm with sound, light and vibration at the same time.
- Rechargeable lithium polymer battery of large capacity, which ensure the device to work continuously for a long time.
- Strong and durable, exquisite and comfortable in touching.