WS 935-15: Gehrke-intercom

Features

Neural and serverless master station. Suitable for wall mounting in flush-mounted housing (UPK 10).

Impact-resistant housing
Disinfectant-resistant foil surface in ALU design
Illuminated display (4 lines, 16 digits)
10 numeric keys
7 function keys
Electret microphone
Loudspeaker
Echo suppression 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 devices
Up to 64 I / O's or sensors can be switched on via I²C adapter
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 at least category 4
Operating voltage: PoE / class "0"
SIP-compatible (Session Initiation Protocol)

Table Caption
Surface	Foil surface in aluminum 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
Operating system	Depending on codec, limited by loudspeaker - G711 / 3.4 kHz - G722 / 7 kHz available as add-on: - PCM32 / 15 kHz - PCM44 / 21 kHz
Power 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: 150 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) 280 x 120 x 2.5 mm (front panel) Mounting hole spacing: 260 mm
Protection class	IP 54