The A-4228 from Alpha is a 28 Unit Area Of Rescue MAS-AUD Requires BB-44 Flush Back Box. Used with #4201B/V Or 4201B/VM Call-In Remote Stations.

Features

• ADA Compliant (in many states – check with you local AHJ’s)
• Clear 2-Way (simplex) Voice Communication
• Hands-Free Voice Reply from Remote Station(s)
• Supervised
• Choice of Standard or Anti-Vandal Remotes
• Choice of Indoor or Outdoor Remotes
• Battery Back-up (optional)
• Choice of Master Stations
• Choice of ADA Compliant Signage available
• Remotes mount into standard electrical boxes
• Simple to wire