Portable gas detector (H2S) Model:XK16/W129488

lcd display. it can indicate the gas,，backlight can be on if neccessory.
2. small , light , compatible
3. it can indicate with sound, lights, vibration
4. It can be charging of 600, 000 times
with chargeable lithium battery
5. it has mini-limit and max-limit. stel and twa alarm and you can set the alarming points
5. mini-limit and max-limit. stel and twa alarm and you can set the alarming points