 Type OA 500
Cordless Switches, Wall Pattern
(Pyramid Type)
Metallic Circuit
Local Battery SystemThe OA 500/5 is shown pictured to
the right.
To be used in conjunction with any ordinary telephone instrument.
Since this switch has no generator or microphone, it must be associated with
an appropriate telephone set.
The connections are made by means of keys.
FRAMEWORK
Polished walnut.
EQUIPMENT
1 x KEY for each line for connecting the lines to the telephone instrument.
CONNECTING KEYS The number varies with the capacity of the board.
1 x CALLING AND CLEARING INDICATOR per line.
NIGHT BELL.
NIGHT BELL SWITCH.
CARBON LIGHTNING ARRESTER.
|
TYPE |
Old Type No. |
No. of Circuits |
Height ins |
Width ins |
Depth ins |
Weight in lbs. |
|
OA 500/3 |
635
|
3 |
14.97 |
7.09 |
4.33 |
8.82 |
|
OA 500/4 |
636
|
4 |
14.97 |
7.09 |
4.33 |
9.48 |
|
OA 500/5 |
637
|
5 |
14.32 |
9.04 |
4.33 |
14.32 |
|
OA 500/6 |
751 |
6 |
17.32 |
9.05 |
4.33 |
15.43 |
Taken from the Ericsson Telephone Catalogue 1914
|
