Sensor 1: LEL (Pentane) Sensor 2: CO. Sensor 3: H2S. Sensor 4: O2 . Battery:Lithium-ion Extended Range. Battery Charger: Desktop Charger. :Pump Color: Black. Approvals:ATEX/IECEx Carrying Case:Soft Case Reference Guide Language:Italian Pump - A motorized sampling pump is included. Pump is capable of a 100 foot sample draw with 1/8inch ID (inside diameter) tubing. This selection requires the use of the Lithium-ion Extended Rangebattery or Alkaline battery.