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Amplifier NH 202 TVG for STR analogue gong call systems including circuit diagram, supply voltage for signalling and door opener function, volume control for door loudspeaker, input: 230 V ~ / 50 Hz, output: 9 V DC/0.2 A and 8 V AC/1 A, dimensions W 107 x H 95 x D 60 mm, for house telephone HT2002/3 and HT3002/3, DIN rail mounting 6 TE
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