Crane No Audio Alarm Type 109

The No Audio Alarm T109 is a professional 4-channel stereo, single-ended input unit that monitors audio presence. These conditions are indicated by multi-colour light emitting diodes:

  • Alarm off
  • Alarm on / no audio
  • Alarm on / audio restored

User adjustable alarm delays can be set individually between 5 and 30 seconds. Restoration takes between 1 and 2 minutes. Four individual potential-free changeover contacts are available to announce loss of audio, as well as loss of power.

Product specifications

Application Audio feeds, transmitters, radio studios, OB vans
Input 4 x single-ended stereo audio inputs
Input connectors 12-way removable screw terminal blocks
Input level Caters for -10 to +4dB levels, or to customer specification
Output connectors 12-way removable screw terminal blocks
Construction Fiberglass PC board inside anodized aluminium extrusion
Power requirement 110 / 220 volt AC, 5 VA
Dimensions 165 x 145 x 44mM
Weight 1,1 Kg nett

International Limited Warranty

Crane Electronics cc (Crane) warrants to the first purchaser of the this product that it is free from material and workmanship defects. Crane's sole obligation under this warranty shall be to provide necessary parts and labour to correct defects, if any, which appear within twelve (12) months from date of purchase. This warranty does not cover appearance, or if the equipment has been, according to Crane's judgement:

    Subjected to misuse, abuse, negligence or accident
    Repaired or otherwise altered by persons not authorised by Crane
    Connected, installed, adjusted or used for a purpose other than that    for which it was designed

To the maximum extent permitted by applicable law, in no event shall Crane be liable for any special, incidental, indirect, or consequential damages whatsoever, including, without limitation, damages for loss of business profits or business interruption, arising out of the use or inability to use this product.


Battery Charger 403/12

Please note that this unit must be installed by a trained technician only. Failure to do so may invalidate this warranty.

The voltage for this unit is factory adjusted for either 110V or 220V AC. Before installing,please ensure that the unit is set to the correct voltage for your country.



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