Further information for Telecom Behnke BT 20-212 - Door phone Industry Standard Series 20 (3x normal)
			
			Door phone Industry Standard Series 20 (3x normal)
  consisting of:
  - Great basic electronics for phones with integrated electronics (up to 8 RT 1 TWB, 1 LP, 1 MIC, 2 BO, 1 AL, 1 VID, electronics extension possible).
  - Module with Speaker (large
  Finish: Aluminum