This confined space manhole gas detector is a beast and a work horse. Incredibly durable and made with top notch German engineering. The instrument
GfG G450-11410 Multi-Gas Detector, CO/H2S/CH4/O2, Black
G450 Multi-Gas Detectors, GfG Instrumentation
GfG Instrumentation G450 Handheld Multigas Monitor
Microtector II G450 - Reliable 4-gas detector for personal protection
G450
G450 Multi-Gas Detectors, GfG Instrumentation
GfG 1450220, GfG Charging Cradle, Single (Power supply not included), G450, Multi-gas: The Safety Equipment Store
GfG rechareable G450 ecoBump kit includes everthing you need for storing, protecting and testing your four gas confined space monitor. The kit
GfG EcoBump Kit with Rechargeable G450-11420E
Data sheet - Dalemans Gas Detection
GfG Multi-Gas Detector: Carbon Monoxide, Combustible, Hydrogen Sulfide, Methane & Oxygen, Audible & Visual Signal, LCD MPN:G450-11414