Bosch PRAESENSA - Page 88

88 en | Installation wiring PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882
Underwriters Laboratories Listing Document (ULLD)
Bosch Security Systems B.V.
Microphone (PRA-CSLD)
Frequency range
(+3 / -6dB) 100Hz—14kHz
Microphone (PRA-CSLW)
Nominal acoustic input level (configurable) 85—105dBSPL
Maximum acoustic input level 120dBSPL
Signal to Noise Ratio (SNR) > 73dBA
Directivity Unidirectional
Frequency range
(+3 / -6dB) 500Hz—8kHz
(noise cancelling)
Display
Size 4.3"
Touch screen Capacitive
Color depth 24‑bit
Resolution 480 x 272px
Brightness 300cd/m
2
Monitor loudspeaker
Maximum sound pressure level, at 1m 75dBSPL
Volume control Mute, -40dB to 0dB
Power transfer
Power over Ethernet (PoE 1‑2)
Nominal DC input voltage
Standard
48V
IEEE802.3af (mode B)
Maximum input current 350mA (IEEE802.3af), With 0 to 4
PRA-CSE connected.
Rated voltage 48V
Line input
Signal to Noise Ratio (SNR) > 96dBA
Total Harmonic Distortion + Noise (THD+N) <0.1%
Supervision (PRA-CSLD)
Supervision
Microphone
Audio path
Controller continuity
PoE (1‑2)
Current
Pilot tone
Watchdog
Voltage