The Americans with Disabilities Act (ADA) requires business or public buildings to have a handicapped accessible entrance. Sometimes that entrance needs to be locked due to security concerns. In these cases you must provide an accessible way for notifying staff to open the door. If you can install a wired intercom system, this one works for that purpose.
The vandal-proof stainless steel housing and call button go outside where it can be accessed by someone in a wheelchair. See this article for mounting requirements: Americans with Disabilities Act (ADA) Intercom and Telephone Mounting Requirements
The master station goes inside and can be wall or desk mounted. There is a door release button on the master station that could be used to activate an optional electric door opener for remote door opening.
There is a call button on the outside unit that will sound a ring tone on the inside master station. The master station presses a Talk button whenever its user wants to talk, but the outside unit does not have to press a button to talk.
- Communication: Press-to-talk, release-to-listen at master station.
- Hands free at stainless steel substation
- Convenient door entry control system with Door Release button
- Inside unit desktop or wall mountable
- Includes a stainless steel box for the stainless steel outdoor intercom.
- Simple 2 conductor shielded wiring between door and master station (with separate 2 conductor wiring for door release)
- Outdoor speaker: 20O, 2-½" diameter, water and puncture resistant
- 3-layer steel baffle protects speaker from tampering
- Wiring Distance: 650' w/22AWG; 1570' w/18AWG