SMART PA TELEPHONE MODEL-WMHS-IIAD:

1) AC Powered 110/220 VAC.

2) Built in amplifier, connected to external loudspeaker horn.

3) Waterproof non-tactile keypad.

4) Magnetic reed hook-switch.

5) 16 gauge steel enclosure.

6) Heavy industrial ABS handset & SS cord.

7) Noise-canceling type microphone.

8) Connected in Parallel Loop
   Using 2 core cable

8) Power source 220/110 VAC.