Four-in-one gas detector alarm toxic and harmful detector combustible oxygen carbon monoxide hydrogen sulfide ammonia

Four-in-one gas detector alarm toxic and harmful detector combustible oxygen carbon monoxide hydrogen sulfide ammonia
 

Product description:

Product parameters:

  • Brand: security when security
  • Series: four-in-one gas detector / alarm / toxic and harmful detector
  • Model: combustible oxygen, carbon monoxide, hydrogen sulfide, ammonia
  • (Imported sensor) + 17% by votes ticket plus 17% by votes (import sensor) with 17% by votes of hydrogen sulfide (import sensor) (Figure 5) with 17% of the votes by the votes of the flammable (Figure 5) with 17% by votes of oxygen (Figure 5) with 17% by votes of carbon monoxide