Visiotech HY-AC672, Hardware Manual

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1
OK Confirm key: make sure your current operation
；
MENU Menu button: In the initial condition according to the key can enter the
management interface
；
ESC Cancel button
：
Cancel your current operation
；
▲
Up key: Turning up menu items
；
▼
Down key: Turning down menu items
；
The bell button: Control the doorbell switch
；
Digital
：
Input digital 0-9
；
The wiring diagram
Key description