Aiphone LEF-3L Call tone adjustment, Selector switch for Call Tone in Occupied Mode, Power supply

2SYSTEM OUTLINE & COMPONENTS (Cont.)

■Call tone adjustment

3-position volume switch, located under Operation plate.

Adjusts call tone volume to low (far left), medium, high (far right).

■Selector switch for Call Tone in Occupied Mode

LEF surface mount master stations are set in the "B" position from the factory. This allows a sub call-in tone to be heard at a muted level while the master is in the occupied mode.

“A” position: Mutes call tone at master while system is in occupied mode.

“B” position: Call tone is heard when master is in occupied mode.

*No call tone between masters.

3-pos. call tone vol. switch

CALL (under Operation plate)

LEF-3L

(FRONT CASE BACK VIEW)

A B

LEF-3L(when shipped)

■Cable requirements

Use multi-conductor cable with an overall shield, non-twisted, 22AWG to 18AWG (0.65mm to 1.0mm), to accommodate the maximum number stations in the system.

Use the gauge specified for the maximum distance between the two farthest stations.

■Power supply

The entire LEF system can be powered by one power supply (PS-1225UL/PS-1225S 12VDC 2.5A or PS-1215DIN 12VDC 1.5A), located near the center of the wire run.

For a system including the All Call and Chime with the BG-10C, one PS-1225UL(S) or PS-1215DIN will power the BG- 10C and the LEF system.

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