WS 902-3 + AG 900-AN: Gehrke-intercom

Features

System intercom for lift systems / lift emergency call with 2 freely programmable function buttons

Impact-resistant surface, coloured through
Integrated audio memory (approx. 6 minutes, can be organised)
Connection options for 2 potential-free inputs
2 output relays can be used for control functions or as auxiliary contacts, switching capacity 2A / 30 VDC or 125 VAC
2 freely programmable function buttons
1 "Clear" cancelling button
Fire brigade conference can be activated by software or switching command, a total of 9 conferences with 5 participants each can be activated in parallel in open duplex (any number of listen-in participants possible) via NK-Conf

Table Caption
Front panel	Plastic, solid-coloured in signal yellow, painted in anthracite, 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	Speaker: Full range, 8 Ohm Sound pressure: 1 W / 1 m - 93 dB Frequency range: 200 Hz - 16 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: 2.5 W B-amplifier: (optional): 25 W
Dimensions	248 x 122 x 4 mm (front panel) 248 x 122 x 50 mm (overall) 248 x 122 x 64 mm (incl. surface-mounted housing)
Protection class	IP 54