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HANDSET INTERCOM
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INSTALLATION & OPERATION MANUAL
SYSTEM OUTLINE & COMPONENTS
AT-406 is a Handset Intercom set, allowing two-way calling & communication.
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•Handset Intercom set (AT-406) or Sub station (AT-306)
•Mounting bracket
•Packet of screws
•Installation & Operation Manual
nComponents available•AT-406 Boxed set
•AT-406PDecorative boxed set (N/A in USA)
•AT-306Add-on sub (add’1 2 pcs max.)
•Power supply:SKK-620in USA or PS-GD, or 4 pcs SUM-3(AA) batteries.
•TAR-3relay for external signalling device. Powered by a separate 6V DC power supply.
NAMES & FEATURES
AT-206AT-306mastersub
Battery check
LED
CALL button
Battery compartment
nFeatures2-handset communication system suited for:
R.V. cab-to-camper, Boat deck-to-cabin,
CALL button Limo. chauffer to back seat, and Restaurant kitchen to bar, etc.
•Up to 3 subs
•Electronic call tone, not adjustable
•Front loading batteries
•Battery or DC powered
•External signalling device
PRECAUTIONS ON INSTALLATION & WIRING
nMountingAT-406 set is designed for indoor use only. Do not install outdoors. It must be used in wall-mounted applications only.
nWiringAT-406 can be wired with 2 non-polarized wires. When add-on sub(s) is installed, connect in loop or home run. Keep audio wires 50cm, 20” away from any AC wiring, fluorescent lights, dimmer switches, etc.
nExternal signalling device = Loading batteriesSlide down front battery cover. Place four SUM-3 (AA) batteries into compartment. Observe polarity.
Any particular station can be signalled by bell or light, while it rings. Install TAR-3relay powered by its own 6V DC power supply (SKK-620 or PS-6D).
AT-306
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nBattery LED indicator1. LED is brightly lit.
+Batteries are powerful enough.
2.Becomes dim during use.
-+ Batteries are getting weaker.
3.LED is no longer lit.
-+ Batteries are exhausted. Replace all four batteries with new ones.