DS 935: Gehrke-intercom

Features

Neural and serverless desktop intercom station.

Impact-resistant housing
Disinfectant-resistant foil surface
Illuminated display (4 lines, 16 characters)
10 numeric keys
7 function keys
Electret microphone
Loudspeaker
Echo cancellation for duplex operation
Function monitoring with messages via SNMP with the NK-SNMP add-on
Microphone sensitivity and volume adjustable via integrated WEB browser
Integrated USB interface for additional equipment
Up to 64 I/Os can be connected via I²C interface
Connection options for 2 potential-free inputs
3 output relays can be used for control functions or as auxiliary contacts, switching capacity 2A / 30V
Network connection: RJ 45, VLAN-capable, cabling from CAT 4
Operating voltage: PoE / class 0
SIP-compatible (Session Initiation Protocol)

Table Caption
Front	Foil surface in aluminium design (car type F150), resistant to disinfectants
Network protocols	IP, TCP, UDP, ARP, IGMP, SIP, RTP, HTTP, TFTP available as add-on: SNMP
Operating system	ellan:RTOS
Frequency range	depending on codec, limited by loudspeaker - G711 / 3.4 kHz - G722 / 7 kHz available as add-on: - PCM32 / 15 kHZ - PCM44 / 21 kHz
Energy consumption	max. 4 W (without additional amplifier)
Operating voltage	PoE / Class 0
Ambient temperature	-20 °C to +50 °C
Loudspeaker	Full range, 4 Ohm Sound pressure: 1 W / 1 m - 86 dB Frequency range: 159 Hz - 20 kHz +/-10 dB
Microphone	Directional characteristic: omnidirectional -65 dB +/-3 (0 dB = 1 V/pa 1 kHz) Speaking distance up to 8 m (depending on room and ambient acoustics)
Amplifier power	A-amplifier: 1.5 W / 8 Ohm; 2.5 W / 4 Ohm B-amplifier: (optional): 25 W
Dimensions	(H x W x D) 30-65 x 122 x 248 mm
Protection class	IP 54