Twin Alert Internal Sounder

Product Features
  • Tamper protection

  • 100dB loudness

  • Engineer hold off

  • Compatible with any panel featuring a speaker output

Combined speaker and sounder in a single unit.

The Twin Alert combines both a speaker and sounder in a single unit, eliminating the need for two separate products situated in different locations.

The speaker element of the Twin Alert mimics keypad tones and the sounds associated with the setting and unsetting of a system. The volume of the tones can also be adjusted to suit individual requirements. The primary purpose of the speaker is to enable users to hear confirmation that the system has set correctly upon leaving the property.

The internal sounder will only activate on alarm and will override the pre-set speaker volume level, providing a siren output of 100 decibels at 1 metre. This high volume internal siren acts as a deterrent to intruders and will also alert any inhabitants.

Tamper protection

The integral tamper protection means that the alarm will be sounded if anyone tries to disconnect the Twin Alert

Engineer hold off

With the Engineer hold off feature you can disable the tamper through the engineer menu on the control panel enabling the system to be maintained without any unwanted alarms.

Sounders technical characteristics


100dB @ 1m

Engineer hold off


Number of Piezos


Tamper protection


For internal use


Environmental and operating features

Storage temperature

-20C to +60C

Certified operating temperature

-10C to +40C

Nominal operating temperature

-10C to +40C

Physical dimensions (H x W x D)

90 x 90 x 46mm



Electrical & battery

Operating voltage

9-14.5V (13.5V nominal)

Alarm current


Quiescent current consumption

30mA 12V

Certifications and warranty

Security Grade

Grade 2

Environmental class


EN Certificate

EN50131-4:2009, EN50131-1:2006+A1:2009, PD6662:2010

Certification type

Self certified

Electrical conformity



2 years

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