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3111 - 2 button call tone

2 Button 3000 Series Audiophone, 'full base' Handset. surface mountable and manufactured from White impact Resistant ABS plastics. Incorporates an electronic call tone input with 3 Level call volume Switch. Includes a lock release and spare service Button for different uses. Compatible with 4K Series, 8K Series, VR4K Series and VR120DK Series Audio Kits.
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