DETEWE opencom 105 Mounting And Commissioning Manual page 37

Electrical Data of Ports
Port
Microphone,
microphone of second handset,
headset microphone
Ear cap,
loudspeaker of second handset,
headset, headset loudspeaker
Active speaker
Recording device audio input
Recording device start/stop
(relay contact 1)
Door display
(relay contact 2)
Connection Values
Electret microphone
Typical sensitivity: 10 mV/Pa
Power feed: I < 300 µA at 1.5 V
Typical impedance: 150 ± 30 ohms
Typical sensitivity: 94 dB/1 mW
(0 dB = 20 µPa)
Max. output voltage: 1 V
at input impedance > 10 kohms
Typical input sensitivity: 0.24 mV
(microphone level)
Max. switching voltage: 50 VDC/29 V AC
Max. switching current: 1 ADC/0.7 A AC
Max. switching voltage: 50 VDC/29 V
Max. switching current: 1 ADC/0.7 A AC
Accessories and Adapters
rms
A
C
35