The IS-A105N is a high output, 105dB alarm sounder. Suitable for all intrinsically safe signalling applications including fire, security and process control.

IECEx Approved

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.

  • Input overload and reverse current protection.
  • Automatically synchronises on multi-sounder systems
  • Unit can be mounted using external lugs or internal.
    BESA compatible fixing positions.
  • Duplicate cable terminations (in & out for daisy-chain
  • Electronic sounder up to 105dB
  • 49 tones user configuable
  • 3 stage alarm
  • Combines with L101L-IS beacon
  • IECEx EExia IIC T4 Intrinsically Safe, zone 0
  • IP66
Hazardous Areas (IEC Ex Certified)

IEC Ex approved gas detectors and sensors for use in Zone 1 and Zone 2 areas within Australia for both Toxic and Flammable gases.

Hazardous Areas are areas in which an explosive gas atmosphere is or may be expected to be present, in quantities such as to require special precautions for the construction installation and use of equipment construction, installation and use of equipment. Hazardous areas are classified into 3 zones based upon the frequency of the occurrence and duration of an explosive gas atmosphere, as follows:

  • Zone 0 - Area in which an explosive gas atmosphere is present continuously or for long periods or frequently.
  • Zone 1 - Area in which an explosive gas atmosphere is in which an explosive gas atmosphere is likely to occur in normal likely to occur in normal operation occasionally.
  • Zone 2 - Area in which an explosive gas atmosphere is not likely to occur in normal operation but, if it does occur, will persist will persist for a short period for a short period only.
  • Non hazardous area (safe area) - A non hazardous area is an area in which an explosive atmosphere is not expected to be present.

As per IEC60079-10-1 and AS/NZS 60079.29.2:2016

Generator Rooms

A range of devices from single point go / no go detectors such as the DA-2010 through to sophisticated IEC Ex type gas detectors / gas sensors can be used for detection of Natural gas, Propane, Butane and various other mixtures.

Designed, Manufactured and Supported in Australia.

Sewage Treatment Plant Monitoring

The presence of Hydrogen Sulphide  can be detected by using the Gas Detection Australia GDA 2529 gas sensor to detect leaks of Hydrogen Sulphide  and evoke deodorisation plant. The SI-100C gas sensor can be used to monitor for leaks of LEL levels of methane gas. In digester applications Carbon dioxide can be detected using the GDA 4350  

Designed, Manufactured and Supported in Australia.

Battery Room Monitoring

The SI-100C and a range of associated Gas Detection Australia controllers can be used in battery room gas detection  to detect hydrogen in battery rooms and sound alarms. The battery room gas detection systems comprise of a hydrogen gas sensor SI-100C and a gas sensor control unit. The Gas Detection Australia control unit  GDA 4020 or GDA 4011 is situated external to the battery room to display the gas concentrations and the alarm status. The battery room gas detection system can then be interfaced to extraction fans, sounders or other apparatus. For smaller battery charging rooms the standalone GDA 40126 can provide an integrated sensor and controller with outputs to drive extraction fans and sounders.

Designed, Manufactured and Supported in Australia.

Specification NameSpecification Value
Power Requirements16-28 VDC via Zener barrier(MTL7728+) or galvanic isolator
Operating Current25mA typical when powered from 24v supply via 28v 300 Ohm Zener barrier
Wiring0.5 to 2.5mm²
Isolation Barrier RequirementsAny certified Zener barrier or galvanic isolator whose output parameters do not exceed : Uo : 28VDC Io : 93mA Po : 660mW
Sound Output105dB @ 1m +/- 3dB, 96dB @ 3m
Number of tones49
Volume Control96dB to 105dB
Alarm Stages3
Effective Range60m @ 1KHz
Operating Temperature-40° to +60°C
Operating Humidity90% RH peak at 20°C
Cable Entry2 x M20 clearance gland knockouts
Enclosure MaterialUL94V0 & 5VA FR ABS
Material ColorRAL3000 Red
Enclosure RatingIP66
ApprovalEEx ia IIC T4
Certificate No.IECEx (SIR 04. 0038X)

Ordering Information