Manufacturer Aiphone Model CCS-1A Power Source 12~16VAC – Use AC transformer PT-1210N (with no-load voltage rating: 20V or less) Communication 2-tone chime, press TALK to reply, hands-free at door, times out in 15 sec. after TALK is pressed Wiring Door to master: 2-cond., overall shield Between masters: 2-cond., overall shield Wire Type Aiphone #822202 or Aiphone #821802 Distance Door to farthest master: 245(22AWG) 590(18AWG) Warranty 1 Year Warranty Weight 1.5000