Gas meter H2S Tango TX1

Gas meter Tango TX1. For hydrogen sulphide (hydrogen sulphide, H2S). 
With two sensors. 
AA battery. 
The device can withstand temperatures between -40°C and 50°C.
Unit of measure: Hydrogen sulphide (H2S): 0.0 to 200.0 ppm with 0.1 ppm accuracy.
Dimensions: 99 x 51 x 35 mm.
Weight: 126 g.