Tamper resistant 2-wire sub-station with programmable red mushroom button, electret microphone, 8 Ohm loudspeaker and input for floating contacts.
The digital flushmount substations ES 831A and ES 833A are designed especially for mounting in American “2-Gang“ boxes. The Intercom stations are manufactured with DSP-technology, which enables functions such as Audio Monitoring or Loudspeaker- / Microphone-Monitoring. The stations are prepared for future download of new functions (updates to new versions) and can utilize
the OpenDuplex® capability of Intercom Servers.
Benefits:
• Excellent 16 kHz speech quality, even from a distance (up to 7 m /23 ft)
• Cabling with 2 wires, star feed, fully digital transmission of speech and data
• DSP-technology, prepared for software download of future functions
• Audio Monitoring, adjustable integration time and noise level
• Microphone-Loudspeaker Monitoring
• Built-in loudspeaker and microphone
• Integrated amplifier with 2.5 W output
• Multifunction LED for indication of status
• Output contact for direct connection of e.g. doors or gates
• Expansion via optional expansion boards (e.g. EB 2E2A)