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Duet Plus Specifications
Min
Typ
Max
Unit
Supply Voltage
12
24
26.9
Vdc
Supply Current
(using internal speaker)
160
mA
(8 Ω load at 9 W)
500
mA
(16 Ω load at 5 W)
400
mA
Output power to auxiliary speaker (no clipping)
6.0
Watts
Dry contact closure detection
Contact and loop resistance
0
2
kΩ
Open circuit voltage
5
Vdc
Loop current
1
10
mA
Low voltage detection circuit
Input impedance
4
kΩ
DC voltage input range
3
30
Vdc
AC voltage input range
3
30
Vrms
Telephone ring detection
Ring detect voltage 20/25 Hz
20
Vrms
Input impedance
50
kΩ
Audio/Paging input
Input impedance
600
Ω
Page input level (HI)
0
dBm
Page input level (LO)
-18
dBm
Audio detection level
- 43
+12
dBm
Output sound pressure at 1 m
Internal speaker only
93
dBA
Typical 8 Ω horn speaker
112
dBA
Output warble frequency
High tone
360
960
Hz
Low tone
290
770
Hz
Modulation
4
12
Hz
Operating temperature
0°
40°
C
Note: Specifications are subject to change without notice.