- Continuous detection of toxic gases and oxygen in explosion hazardous area with flame proof structure - Self diagnosis function with built-in Microprocessor - Excellent selectivity by adapting detection principle only for toxic gases & oxygen - Stable quality and proved detection principle for service life | Built-in back light LCD or OLED display - Auto calibration and program setting with a magnet bar - 2-stage alarm, 1-trouble display and relay contact output - 4-20mA (Current source or Sink) output signal - Easy configuration of monitoring system by RS-485 Modbus communication - With the alarm unit - Normal : Green LED -Alarm : Red LED, Buzzer(95 dB) - Trouble : Yellow LED - Calibration and maintenance by one-man - Superior performance for detecting gases below TLV