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Explosion Proof Sounder

EXD Sounder

The EXD Sounder has been approved for use in potentially explosive atmospheres and very harsh environmental conditions.

The unit incorporates a three stage alarm option with sixty three tones to choose from which includes four tones that can be recorded or customised by the installer. All tones can be pre-set during installation.

The units also have the ability to be fitted with a telephone initiation function and can be used as the second ring output indicator for telephones when installed in very noisy environments.

The design allows for termination inside the enclosure. The sounder is supplied with a mounting bracket as standard.


  • Approved by ATEX and CQST • IMETRO and IECEX (Pending)
  • ATEX: II 2G Exd IIC T4 - T6 (incorporating IIA & IIB)
  • Zones 1&2, Zones 21&22 (Pending) 
  • Conforms to EN (IEC) 60079-0 EN (IEC) 60079-1 and EN54
  • Volume control
  • Dustproof & Weatherproof

Part No.Voltage (50/60Hz)SounderSound Output at 1mBody Colour
TCB-001724 VDC 3 Stage alarm with 63 Selectable tonesUp to 115 dBRed
TCB-0018100-240 VAC 3 Stage alarm with 63 Selectable tonesUp to 115 dBRed

IP Rating: IP66/67    Operating Temp: -40ºC to +70ºC     Construction: Glass Reinforced Plastic    Cable Entries: 4 x M20, M25, 1/2”NPT, 3/4”NPT    Weight: 5.4kg