GB
23
Haustelefon serie 8870,
type 8879
Descrption
Type 8879 is an interphone in the 8870 series for ELVOX 2-WIRE audio
and video door entry systems. It is supplied as standard with 2 pushbut-
tons, one for lock release, the other for stair light light (default).
220 mm
60 mm
75 mm
Connection and connector terminal board
1, 2) BUS line.
4, 6P) Connection for door call pushbutton.
5, 6S) Connection of additional door ringtone
Reset
Attiv.
6P6S5421
A+
A-
CA
Fig. 5,1
Fig. 5.2
B
A
A
A
Fig. 5.3
C
B
A
P2
P0
Controls
The call volume can be adjusted by moving the loudspeaker wire from con-
nector A+ (high) to A- (low).
VIDEO SIGNAL STABILISATOR
On the lower side of the interphone there is a
connector (A-B-C) and a jumper for the video
signal balance. This jumper must be used on
the installations where there are more applian-
ces (interphones or monitors) connected in se-
ries (Fig. 5.3).
On the standard configuration displace the
jumper into "B" only on the last set and keep
the jumpers on the other appliances in the ini-
tial position "A" (No termination" (Fig. 5.3).
For other wiring configurations see note: "Bus
termination for ELVOX TWO-WIRE installations"
provided (Page. 44).
Video signal
stabiliser
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