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COMPACT VOICE ALARM SYSTEM
SERVICE MANUAL
6.2.4 ABT-EKB-20M – microphone keyboard extension
Every extension added to reman microphone or zone microphone provides additional 20 functional buttons. The extension has
two I2S interfaces to connect another extension. In accordance with EN54-16, one of the buttons should be assigned to a visual
and sound signal test of the microphone unit.
Drawing 28. ABT-EKB-20M microphone extension
1. LED indicators – freely programmable; RGB left LED, green right LED
2. Functional buttons – freely programmable
Table 12. Technical data of ABT-EKB-20M microphone extension
Model ABT-EKB-20M
Power supply RJ45 from DFMS or DMS
Protection rating IP 31
Keyboard and controls
Number of keys 20
Number of LED 20x RGB + 20x green
LED color RGB (red, green, blue) + separate LED green
Other parameters
Operating temperature 0°C to 60°C
Storage temperature -20°C to 70°C
Operating humidity 15% to 80%
Storage humidity 5% to 95%
Weight 1,4 kg
Dimensions of the space for
the description of the buttons
15 x 25 mm
Dimensions 120 (W) x 55 (H) x 210 (D) mm
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