The Micro IV is the single gas detector with simple operation and reliable warning system. It is the device with docking system for quickest calibration and data transfer to computer. The device has large memory with an IR interface and the revolutionary docking station. The MICRO IV docking station is a trendsetting device management system, which reduces the cost of ownership and duration of the calibration. The docking station checks the acoustic and optical alarm functions, device errors, alarm thresholds and response times of the MICRO IV.