Aiphone LEF: Selective Call Open Voice Intercom

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LEF Open Voice Selective Call Intercom System integrates any combination of master and sub stations. The 3 - call (LEF-3), 5 - call (LEF-5 & LEF-5W) and 10 - call (LEF-10; LEF 10-W; LEF-10S & LEF-10SW) master stations are available, while 6 different door or room substations can be connected. The system is easy to install, with 5+n wires between master stations and 2 wires between master and sub stations (Each LEF system requires 12V DC power supply). Operation is equally straightforward: the master station calls the desired substation by tone or voice. The substation replies hands free, while the master station operates on a "press-to-talk" basis. LEF-n master stations are surface mounted, LEF-nW master stations with terminal box can be either desktop or surface mounted, while LEF-nC master stations are designed for flush mounting. Master stations LEF-10S and LEF-10SW integrate ALL CALL function, but a BG-10C paging adapter is required. LEF-5 and LEF-10 master stations also integrate door release function.

Features:

Flexible system design, intermixing any number of masters and subs to the system's capacity
Selective calling from any master, with hands free reply from sub or responding master
Room monitoring from a master station
PanTilt video door answering can be added
Selective door release (LEF-5, 10 and 10S), with RY-PA relays
All Call (LEF-10S), door chime and background music input with BG-10C and PS-1225UL

Specifications
Power Source 12V DC, 300mA per station. *Use PS-1225UL power supply.
Communication Subs call in with call tone and LED, 20 sec.
Depress station button with lit LED. Press to talk, hands free reply.
No LED annunciation between masters.
Hands free reply from responding master.
*800mW receive at 20ohms. 500mW transmit at 20ohms.
Door Release Button Contact 30V DC, 0.1A (resistance load).
Selector Switch Contact 12V DC, 300mA.
Wiring Use shielded multi-conductor wire, not twisted pairs.
2 conductors per sub, homerun (single master system), or 3 conductors per sub (multi-master system). (Use Aiphone #822202 or #822203.)
LEF-3 requires 9 conductors between masters. (Use Aiphone #822210.)
LEF-5 requires 12 conductors between masters (plus up to 5 for video/door release controls). (Use Aiphone #822212 or greater.)
LEF-10 requires 17 conductors between masters (plus up to 10 for video/door release controls). (Use Aiphone #822220.)
LEF-10S requires 20 conductors between masters (plus up to 20 for video/door release controls). (Use Aiphone #822220.)
Distance 650' with 22AWG
1600' with 18AWG.

Communication Network & Wiring:

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