The E – 20B is telephone line powered speaker phones designed to provide two way hands free communication. Both function identically but are available in two different housings to better suit the application. When the “Call” button is pressed the E – 20B will come off – hook and will remain off – hook until a CPC signal is detected the programmed timeout has elapsed a busy signal is detected or the call goes silent making the unit automatically disconnect.
he E – 20B can be connected directly to a C.O. line or analog PABX/KSU station when programmed as a ringdown circuit or used with a Viking Hot – Line Dialer. If a line or station is not available Viking ́s DLE – 200B ring down circuit can be used. One or up to four E – 20B speaker phones can share an existing phone line in a house or small business when used with a Viking C – 200 or C – 2000A (respectively) Entry Phone Controllers.
For outdoor or harsh environments the E – 20B are available with Enhanced Weather Protection (EWP). The E – 20B – EWP features rubber gaskets and boots closed cell foam gasketing hand soldered silicon sealed connections anti – corrosive gel filled tip and ring connectors as well as urethane encapsulated circuit boards with internally sealed field – adjustable trim POTS and DIP switches.

Commercial industrial and residential door security.

Door or gate communication.

Business delivery entrances.

Use in conjunction with a Viking K – 1900 – 5 Dialer on C.O. lines or analog PABX/KSU stations.

Use on any programmed ringdown circuit of an analog PABX/KSU station.

Alternate action call button to place or cancel a call.

Intelligent call progress detection for automatic hang – up on CPC silence busy signal or time out.

Telephone line powered.

Optional Enhanced Weather Protection ( EWP ) available for greater weather resistance.

Adjustable microphone and speaker volume.

Programmable maximum call length.

Selectable auto – answer feature allows remote monitoring.

Two way handsfree communication.

Programmable VOX ( mic/speaker ) switching speed.

Light gray colored impact resistant U.V. stable plastic chassis.

Surface mountable only.

Power: Telephone line powered (18 VDC/20mA minimum).

E – 20B Dimensions: 140 mm x 115 mm x 38 mm ( 5.5″ x 4.5″ x 1.5″ ).

StandardE – 20B Environment: – 26° C to 54° C ( – 15° F to 130° F) with 5% to 95% non – condensing humidity.

E – 20B – EWP En