Eranntex MS-104K-M 4 Gas Monitor Kit

Can measure 4 gases simultaneously either in diffusion or pump suction measurement
4 key-button operation with 2" LCD display 
Large capacity data storage and data recovery function which can partially or completely restore factory data
IP68 dustproof / waterproof classification (up to 1.5m underwater) 
Features with sound and light as well as vibration alarm mode
Size : L90 x W70 x H38mm
Weight : 380g

Each kit includes an external pump, charging base and 2m hose