AVR 20 : Alarm Flasher and Sounder

This sounder/flashers operates at 24VDC. The sounder can be permanently disabled so that unit acts as a flasher only. These units are designed for internal use. These are available in Red or Amber.

IS-A105N : Intrinsically Safe Alarm Sounder

The IS-A105N is a high output, 105dB alarm sounder. Approvals include ATEX, IECEx and GOST-R for Zone 0 applications and FM approval for Class I Division 1 and Class I Zone 0 applications.

The IS-A105N is suitable for all intrinsically safe signalling applications including fire, security and process control.

IS-L101L : Intrinsically Safe LED Beacon

The IS-L101L unit is an intrinsically safe field mounting beacon which provides a bright
flashing warning signal.


The unit can be used independently or combined with an IS-A105N 49 alarm sounder. Combination
units can utilise a common zener barrier or galvanic isolator and may be coupled together or
mounted seperately. With the IS-A105N the alarm accept function can be utilised. By closing a pair of
external contacts (i.e push switch) the operator may silence the alarm for set periods between 5
seconds and 2 hours. If after the preset time the alarm condition still exists the sounder will activate
again.

GDA 2000Ex : Explosion Proof (IEC Ex) Flammable Gas Detector

The GDA 2000Ex is certified for use in Zone 1 Hazardous areas within Australia. The sensor is certified IEC Ex. It operates from 24 VDC and gives a 4-20 mA o/p over the range 0-100% LEL of the gas to which it is calibrated. Typical gases are Methane, Propane and Hydrogen. The unit can be programmed and calibrated without opening. It is fitted with a sensor splash cover giving a head IP rating of IP66 .

FULLY TECHNICALLY SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 2000Tx : Explosion Proof (IEC Ex) Toxic and Oxygen Gas Detector

This gas detector/gas sensor is certified for use in Zone 1 Hazardous areas within Australia. The gas detector/gas sensor is certified IEC Ex. It operates from 24 VDC and gives a 4-20 mA o/p over the range of the oxygen or toxic sensor to which it is calibrated. The gas detector/gas sensor can be programmed and calibrated without opening. The display indicates the gas level reading. It is fitted with a sensor splash cover giving a head IP rating of IP66. The sensor does not have to be opened to carry out a calibration as all programming can be carried out via an external magnetic switch. This allows calibration without a hot work permit.

FULLY TECHNICALLY SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 4020 : Two Channel Controller

The GDA 4020 control unit has 2 x 4-20 mA i/p with 3 associated programmable relay alarm levels per sensor. There is an independent fault relay. There are 3 x analog o/p’s which can be configured for either channel as 4-20 mA, 0-20 mA, 0-5 V or 0-10 V. The controller has an isolated RS485 o/p which can be configured to drive modbus or an interface to the M2001 mimic panel. All configurations are carried out via the front panel push buttons. The unit requires 24 VDC.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

MS001 : Flush Mount Mute Switch

The MS001 uses one of the alarm SPCO relays from the GDA 4020, GDA 4011, or GDA 2400 to drive the AVR-20R/YM sounder- flasher. The sounder- flasher can be muted by incorporating the MS001 into the o/p switched 24 VDC from the control panel. The sounder will sound when a gas alarm occurs and continue sounding until either the alarm level falls below its threshold value or the MS001 button is pressed. The Mute function automatically resets when the alarm condition terminates.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.