The CSI-1 is a compact, vandal resistant, indoor / outdoor station to station surveillance system/intercom. The master unit has a PTT button for initiating talk down to the slave unit or to mute listening to the Slave microphone. An optional call switch is available for the slave unit. The units connect to one another via a dedicated cat5/6 cable.

Includes:

• CSI-1-M Master Speaker / Microphone
• CSI-S Slave Speaker / Microphone
• 12vdc 500ma Power Supply
• Mounting screws
• Installation instructions 

Wiring requirements:

• 1 CAT5/6 cable, 1000’ maximum length

Options:

• Ultra low noise, higher sensitivity microphone capsules. Add –LN to Part number
• CSI-S-C Call switch for slave unit 

Features:

• Weather resistant
• Vandal resistant
• Compact form
• Low noise MOSFET microphone pre-amplifiers
• 1.5” 1W speakers
• Microphones feature Omni-directional 25' pickup pattern
• 200Hz-10Khz Frequency response.
• Push to talk button on Master unit doubles as listen mute switch.
• Over talking tone alerts user on slave side that it’s clear to talk.
• LED Talk Mute indicator on Master unit
• Adjustable speaker and call FTT tone levels
• Optional call switch for salve unit
• Power; 12Vdc @ 250ma
• Input power reverse polarity protected
• Stainless steel single gang plates
• Temperature range 0-70C
• Dimensions: L 4.5” x W 2.75” H 1.4”
• Combined Weight .25lbs