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  • HAI Model 62A03-1 Volume-Source Control (VSC) — Installation Instructions

    August 31, 2026 2 min read

    Installation instructions for the HAI Model 62A03-1 Volume-Source Control (VSC) — a wall-mounted zone keypad for whole-house distributed audio systems.

    Full text manual (for reference)

    Installation instructions for the HAI (Home Automation, Inc.) Model 62A03-1 Volume-Source Control (VSC) — a wall-mounted zone keypad that selects and controls audio sources in a whole-house Hi-Fi distributed audio system.

    Description

    Audio sources can be selected and controlled by any Volume-Source Control (VSC). The VSC provides the capability to change power state, volume, balance, treble, and bass settings for each zone. Each VSC also includes an IR receiver, allowing you to remotely control the Hi-Fi system and/or audio sources from any zone in the house.

    Installation

    VSC units connect directly to the Hi-Fi Main Assembly using Cat 5, unshielded, twisted pair (UTP) cable for communications. Each end of the wire is terminated with an RJ45 connector, wired to the standard EIA/TIA 568A scheme. Properly terminating the Cat 5 cable is crucial for correct system operation.

    • The total distance of Cat 5 between the Hi-Fi Main Assembly and the VSC units must not exceed 2,000 feet.
    • No single run of Cat 5 should exceed 250 feet.
    • Insert the RJ45 connector on one end of the cable into the zone input jack (1-8) under "Zone Control / IR In" on the Hi-Fi Main Assembly.
    • Insert the RJ45 connector on the other end into the jack labeled "Zone Control" on the VSC.

    Setting the Zone Address

    Although the Hi-Fi Main Assembly has separate RJ45 connectors for each zone, each VSC must be configured to a specific zone address to establish its location. This setting is made on the back of the VSC using a rotary switch. Place a small screwdriver in the slot on the rotary switch and turn it to the appropriate zone address number (1-8).

    Changing the Color of the VSC

    The VSC ships with a white faceplate, knob, and insert; the color can be changed to complement interior décor. Additional colors are available through your HAI distributor.

    1. Remove the faceplate. Firmly grasp the knob and pull straight outward until the knob is removed.
    2. The insert attaches to the VSC with one latch on the right and one on the left. Using a small-bladed screwdriver, gently depress the latch on one side while lifting up on the insert. Once released on one side, remove the insert from the other side.
    3. Align the latches of the new insert to the openings on the rim and gently snap into place.
    4. Insert the new knob onto the volume control shaft. Attach the new faceplate.