Altair 4XR (EX-OX-CO-H2S) basic four-gas manual gas detector for personal monitoring. The instrument is regularized and used both by the Disaster Management and MOL companies! Parameters: - available sensors: Comb, CO, H2S, O2 - 7.5m drop test - IP 68 protection - 3 year warranty - operating temperature between +60°C and -40°C - daily Bump test option - Bluetooth connection, the to access data logging and download - ATEX Zona "0" classification!!