SMART INDUSTRIAL LOUDHEARING TELEPHONE
MODEL-WMHS-IIILH:

1) AC powered 110/220 VAC.

2) Magnetic reed hook switch

3) Non tactile keypad.

4) Noise canceling mic.

5) Volume control knob to adjust the output
  of handset earphone.

6) 16 gauge steel enclosure.

7) Heavy industrial handset & SS cord.

8) Environment Protected.

9) Dustproof enclosure fully gasketted.

10) Ringer sensitivity 40 – 100 V.

11) Line voltage 24 – 56 VDC.