25
Technical Data
Connection data
Supply voltage
24…66 Vdc
Supply current
19… 100 mA
Ringing alternating current
30…90 Vac
Ringing frequency
16…68 Hz
Ringer input impedance
≥ 6.0
k
Ω
at 25 Hz
≥ 3.5
k
Ω
at 50 Hz
Enquiry key (flash
)
only for DTMF 80 ms, 120 ms, 600 ms
Dialling mode
3
2
.
Q
T
-
U
T
I
o
t
g
n
i
d
r
o
c
c
a
s
e
i
c
n
e
u
q
e
r
F
F
M
T
D
Tone duration unlimited or 90 ms
Pulse/Pause ratio
D
P
1.5:1 (60/40 ms) or
2:1 (66.7/33.3 ms)
Ringing volume
max. approx. 95 dB(A) at 1 m distance
m
m
8
2
1
x
1
9
1
x
3
9
2
g
n
i
s
u
o
H
(Height x Width x Depth)
g
0
0
3
.
2
.
x
o
r
p
p
a
t
h
g
i
e
W
(telephone incl. telephone mount)
x
ir
t
a
m
5
x
7
,
w
o
r
r
e
p
s
n
o
it
i
s
o
p
6
1
,
s
e
n
il
2
y
a
l
p
s
i
D
Pictograms
Operating utilization position
Handset
e
n
o
h
p
o
r
c
i
m
l
i
o
f
-t
e
rt
c
e
l
E
e
c
e
i
p
h
t
u
o
M
r
o
t
a
r
e
n
e
g
d
l
e
if
c
it
e
n
g
a
m
h
ti
w
t
e
s
n
i
r
e
v
i
e
c
e
r
c
i
m
a
n
y
d
t
e
s
n
i
r
e
v
i
e
c
e
R
m
m
5
.
2
o
t
p
u
d
e
ri
w
it
l
u
m
r
o
-
e
l
g
n
i
S
s
n
o
it
c
e
n
n
o
C
2
Labelling
Power cable
TCP/La – TCP/Lb
(
TCP : Terminal Connection Point)
Secondary sounde
r
W / W1
Environmental condition
s
without LC
D
with LCD
Ambient operating temp
.
-25°C...+55°
C
-10°C...+50°C
Transport and storage temp.
-25°C...+70°
C
-20°C...+60°C
Degree of protection
acc. to IEC6052
9
IP65
Table or vertical wall mounting
Summary of Contents for wFT3
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