Gas detection & gas measurement device for the inspection of underground gas pipes using suitable probes (e. g. carpet probe). With built-in diaphragm pump, Bluetooth module and rechargeable Li-Ion battery. The device can be equipped with additional sensors to enable further applications. The following applications are possible: - Inspection of underground pipes - Inspection of accessible pipes in buildings - Inspection of accessible pipes on plants, etc. - Inspection of ground soil for pinpointing (optional) - Purging of gas pipes (optional, only in combination with pinpointing) Operating approx. 10 hours Measurement ranges depending on built-in sensors Dimensions (LxWxH): 100 x 195 x 86 mm Weight: 1.1 kg Temperature range: -10°C to 50°C