Single Channel Gas Detector Receiver

Model : GTC-540
Channel : 1
Comm. : 4-20mA, RS-485, Relay



  • Integrated receiver with built-in Microprocessor
  • Simple structure, refined design and low cost of ownership
  • Connectable with various types of gas detectors
  • Easy installation with a wall mount type
  • Gas concentration display with 3-digit & Bar-graph (32 Segment, 3-color LED)
  • 3-color display according to alarm stages (Green, Yellow, Red)
  • 3-stage alarm level LED display and relay contact output
  • Easy configuration of monitoring system with RS-485 (isolated) Modbus serial communication (Option)
  • Programmable alarm setting (Level, Time delay)
  • Peak hold
  • Self diagnosis



Model GTC-540
Operation display 6-LED(Power, 3-stage alarm, Trouble, Stand-by for maintenance)
Measuring display 3-Digit  1.8” FND & Bar-Graph(32 Segment, 3-color LED)
Measuring range 1~999 (programmable) / %LEL, ppm, %vol
Alarm display  Visual : 3-stage alarm, Trouble LED, Warning Light
Audible : buzzer
Alarm output signal 3-Stage Alarm, Trouble/ AC250V 3A relay contact (SPDT)
Shut-off Valve control signal (DC 12V)
Alarm level set Programmable with in detection range
Input signal 4-20mA DC( 2-wire or 3-wire)
Output signal 4-20mA DC
Isolated RS-485 Communication Modbus (option)
Reset signal Reset switch and remote control
Program set mode  Alarm value (1,2,3 alarm)
                    Alarm time (instant & delay) 1~30min
 Alarm dead band
        Measuring value offset (SAD)
 Relay output on/off
Operating temperature -20℃ ~ +50℃
Operating humidity 5~99% RH(non-condensing)
Operating power Standard : AC90V~250V / 12W max
24V DC (Option) / 280mA max
Dimensions 235.6x185x117.3 (WxHxD)mm
Weight 1kg