ALTAIR 4X MULTI GAS DETECTOR KIT Available with O2,LEL,CO,H2S Sensors -Perfect for Confined Space Entry Applications -Motion Alert & Instant Alert features plus audible, visual & Vibrating Alarms -20 hour Battery run time, comes c/w battery charger stand -Superior dust & Water Protection (IP67) -Event & Data Logging Capable -Compatible with GX2 Automated Test System -Long lasting sensors with 3 year Warranty -Complete Kit Contains : Kit Contains: Altair 4X Detector x 1 34L Calibration Gas x 1 Regulator for Gas Bottle x 1 Charger x 1 Carry Case x 1 instruction Manual (CD)