DEP 1001 (replaces BC 3010)
This device has a black Bakelite cover and is equipped with a microphone of standard design and a buzzer, which is mounted on the device terminal block. The button mounted in the cover has three positions, namely normal mode, when the microphone is on, an on position, when the microphone is off-hook, and a signal mode, when the button pressed at the bottom for signalling.

The device is provided with a bottom plate, which was attached to the wall, after which the device is screwed onto the bottom plate using two screws, after connecting the outer wire to the terminal.

Parts:
Microtelephone RLF 1015 made of black Bakelite with microphone capsule RLA 1001, 200ohms, and Cord TRS 4201, 1000mm.
Buzzer, 40ohms.

Dimensions:
Height 145mm, width 60mm for the bottom of the device plate.

Weight 0.76 kg.

Taken from the L. M. Ericsson Catalogue No. 610 (1939) - Swedish Translation
 

Last revised: April 06, 2024