Handheld gas detection, device and also handheld for hazardous, explosive, combustible, industrial locations detector

Both devices are made by gas clip technologies. The orange one is model SGC-H

H2S

Needs to be recalibrated

The yellow device is C22.2 No.152

Compostable gas detecto certified safe for use in hazardous, explosive or combustible industrial locations.

Must purchase both, will not sell individually