Detect Freon, Flammable, Oxygen & Toxic gases simultaneously Apply algorithm to prevent malfunction for interference gas (PA, Ethanol, FC3283 and Alcohol types) Fast response of gas leakage with a high efficient pump insideDetection gas from low to high concentration owing to various detection principle Stable quality and proved detection principle for service life Built in Data & Event Logging Parameter setting with Color graphic LCD Self diagnosis function Flow Sensor to control flow rate automatically 2-stage alarm, 1-trouble display and relay contact output 4-20mA output signal Easy configuration of monitoring by RS-485 Modbus (Isolated) and PoE communication(option) Calibration and maintenance by one-man