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Four channel gas detection system

The AGDS-V is a gas detection system designed for use in boiler houses, plant rooms and areas with a risk of gas escape or build up.

Up to 4 low voltage Medem sensors for the detection of Natural gas (CH4), LPG (C3H8), carbon dioxide (CO2), carbon monoxide (CO) or oxygen depletion (O2) can be connected to the panel.

Available as:

  • AGDS-V with valve isolation.

  • AGDS-M gas monitoring only with auto restart after a power failure (no valve control)

In the event of a high alarm from one of the sensors, the AGDS-V will isolate\close any connected solenoid valve whereas the AGDS-M would only raise an alarm. Low alarm indication is given on both versions.

Panel controls included “Mute”, “Reset” and Emergency Stop buttons.

Remote emergency stop buttons and thermal links can be monitored and there is also a fire alarm input which will close the gas valve when activated.

There are two change over mains rated relays which can be used to activate a beacon/sounder, a fan or signal to a BMS system.

Each relay is able to be set to report one of the below statuses :

  • Low Alarm
  • High Alarm
  • Emergency Stop
  • Gas On/Off
  • Fire Panel Activated
  • Detector Fault
  • Generic Alarm

If you require further information about this product please call us on 0161 233 0600 or email at and we'll be more than happy to help.

  • AGDS-V
  • AGDS-M

Design & Specification Documents

  • 5 Year Warranty

    5 Year Warranty

    Medem’s industry leading five-year warranty is a demonstration of the company’s confidence in the quality and design of our products.

    This applies to the main panels and sender units, gas detectors carry a two year warranty.

    Where we commission an installed system the warranty is extended from five to ten years. At the time of commissioning photos and gas pressure readings are recorded along with other relevent details of the installation. A 24 hour help line number and serial number is attached with the panel and all details are then entered on to the Medem database.

    5 & 10 year warrenty

  • AGDS-M


    • Clear OLED display
    • Four Channel gas detection
    • Auto restart on power failure
    • Two settable BMS relays


  • Clear OLED dispay

    Clear OLED dispay

    Simple easy to read display

  • CO2 based ventilation activation

    CO2 based ventilation activation

    When fitted with the additional BMS relay, a signal can be taken to a contactor to switch on a fan when a set level of CO2 has been detected in order to control the ventilation rate.
    This can help to save energy by controlling fans so that as the occupancy rises and falls so will the ventilation rate.