Connectable with various types of gas detectors Large-scale digital concentration display and warning light can be applied for remote viewing Gas concentration display with 3-digit, 4-digit,or Bar-graph (32 segment, 3-color LED) 3-color display according to alarm stages (Green, Yellow, Red) 3-stage alarm, 1-trouble LED display and relay contact output Easy configuration of monitoring system with RS-485 Modbus isolated serial data communication(Option) Programmable alarm setting (Level, Time delay) Peak hold Self diagnosis