CO measuring instruments with built-in probe

Carbon monoxide is a silent killer. The compact Testo 317-3 CO meter is designed to provide you with a quick and reliable means of testing ambient air for carbon monoxide. 

• Instant Start up: no zeroing phase 

• 3-year warranty on CO sensor 

• Alarm with adjustable thresholds 

• Carry case with belt clip and handstrap 

The high-quality testo 315-3 is an easy-to-use, ruggedly designed CO and CO₂ meter that enables you to carry out quick and reliable ambient measurements according to DIN EN 50543 standard.

• Measures CO & CO2 

• Temperature & Humidity Measurements 

• Optional Bluetooth Interface 

• Optical & Audible Alarms