The GDS 4 Channel Controller

The GDS 404 is a four channel alarm unit meeting the requirements for economic and reliable monitoring of gas levels, monitoring in any type of environment from commercial premises through to heavy industrial and hazardous area applications.

Typical monitoring locations are public buildings, boiler plant rooms, swimming pools, water treatment works, HVAC control systems, manufacturing and processing plants.


  • Versatile System Configuration
  • Suitable for Flammable, Oxygen, Refrigerant and Toxic Gases
  • For 1 to 4 sensors (mV signal or 4~20 mA inputs)
  • Two Alarm Stages
  • Selectable Alarm Relays per Channel
  • Analogue 4-20mA Output per Channel
  • Delay to Alarm - Optional
  • Internal Battery Backup - Optional