Alpha A-4240 40 Unit Area of Rescue Master Station/Audio | 123 Security Products

40 Unit Area of Rescue Master Station/Audio Requires BB-46 Flush Back Box. Used With #4201B/V or 4201B/VM Call-In Remote Stations.The 4200 series is designed to accommodate up to 44 remote locations for each master station. The smallest master station is a 4-unit and the capacities increment in groups of 4 to a maximum of 44 (or more with custom-sized masters). Master and remote stations are made of rugged Stainless Steel and Anodized Aluminum. Master stations emit a loud, clear tone signal that commands an immediate response.