Portable Gas Detector With Pump

We are offering (co,h2s,o2,lel) portable m40 gas detector with pump. (chinacoal08)
product name:  portable m40 gas detector for co,h2s,o2,lel 
 
m40 specifications:
 
size: 4.30" x 2.45" x 1.27" (109mm x 62mm x 35mm)
weight: 8.6 oz. Without sp40 (243 grams)
11.5 oz. With sp40 (326 grams)
display: custom graphic lcd with backlight
temperature and humidity range:
 operating temperature: -20ºc to +50ºc (-4ºf to 122ºf),
all sensors
per csa standard c22.2 no. 152,
lel sensor tested to 0ºc to 40ºc
(32ºf to 104ºf)
operating humidity: 15-95% rh, typical
0-99%, intermittent, non-condensing
storage temperature: 0 to 20ºc (32º to 68ºf)
 
battery specifications:
 rechargeable lithium-ion battery
3.6 volts, 1.8 amphr.
 charger specifications:
 runtimes:
18 hours diffusion, 12 hours with pump
main parameter
sensor specifications:
 
gas range resolution t90
carbon monoxide(co) 0~999ppm 1ppm 48sec
hydrogen sulfide(h2s) 0~500ppm 1ppm 30sec
oxygen(o2) 0~30% 0.1% 10sec
combustible(lel) 0~100%lel 1% 35sec