DSX Stand Alone Complete Turn Key Docking Station for Ventis MX4 & Ventis Pro Series Gas Monitors, Complete System, Industrial Scientific Mfg# 18109401 - Durawear.com
Industrial Scientific Ventis™ MX4 Multi-Gas Monitor with Pump - LEL, O2, CO, H2S - 31236 - Northern Safety Co., Inc.
18108209 - Industrial Scientific Ventis Single Unit Charger/DataLink