Other Audio System Components

MP3 audio player

The MP3 audio player RRAM-MPP/A1 with Ethernet interface is designed for use in railways and rolling stock

Sound Control Unit

RRAS-SVC units are used for controlling sound on audio systems with a RS485 interface.

Interconnecting Sound Module on UIC bus

The PAS-01/A interconnecting module is designed to connect the sound output from the APx panel computers with the UIC bus


MP3 audio player

Audio output

2 × 5 W sinus

Frequency range

30 Hz to 22 kHz

Recommended loudspeaker type

min. 8 Ω, min. 10 W

Supported audio format

MPEG 1 Layer-3 (MP3)

Supported bitrate

max. 320 kbit/s

Internal memory


Power supply voltage range

16.8 V to 33.6 V DC


1 × 10/100 Mbps, M12

Galvanic isolation




Ingress protection rate


Operating temperature range

-40 °C to 70 °C


0.66 kg

Dimensions (w × h × d)

(161 × 173 × 36) mm

StandardsEN 50155, EN 61373, EN 60068-2-1, EN 60068-2-2, EN50121-3-2




Sound Control Unit

   Galvanic separation yes, 500 V AC/ 1 minute
Buttons2 × 
   Lifetime106 touches
   Buttons contour backlightyes, adjustable intensity
Indication7 × LED, green
Power supply16,8 V to 33,6 V DC
Front panelaluminium + foil
Ingress protection rate
 – Front panel
 – Rear panel

Operating temperature range -40 °C to 70 °C
Weight240 g
Dimensions (w × h × d)(100 × 72 × 60) mm
StandardsEN 50155, EN 50121-3-2, EN 61000-4-29, EN 61373, EN 60068-2-1, EN 60068-2-2




Interconnecting Sound Module on UIC bus

Relay24 V DC., -30 % to +25 %
   Current limitsPTC, 70 mA
Separating transformerconversion ratio 1 : 1
   Max. voltage2 V eff.
   Impedance600 Ω
Ingress protection rateIP20
Operating temperature range-40 °C to 70 °C
Weight160 g
Dimensions (w × h × d)(74 × 80 × 30) mm
StandardsEN 50155, EN 61373, EN 60068-2-1, EN 60068-2-2




Types available:

RRAS-SVC/A1sound control unit, black front panel design
RRAS-SVC/A11sound control unit, white front panel design
PAS-01/Ainterconnecting sound module on UIC bus
RRAM-MPP/A1MP3 audio player


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