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  • KBSound (EISsound) In-Wall Bluetooth Audio Receiver — Installation & User Manual

    August 31, 2026 2 min read

    Installation, wiring, and Bluetooth pairing manual for the KBSound In-Wall Bluetooth Audio Receiver Module, which fits into a standard Decora wallplate.

    Full text manual (for reference)

    Overview

    The KBSound (EISsound) In-Wall Bluetooth Audio Receiver is a compact module that fits into a standard Decora wallplate, letting you stream music from any Bluetooth device (A2DP/AVRCP profiles) directly to in-ceiling or in-wall speakers, or add a wired 3.5mm audio input. It includes a stereo line output for connecting to an optional Audio Control unit or Auxiliary Amplifier.

    Installation

    The Module fits into a standard DECORA wallplate. We recommend a one- or two-gang UL/CSA-approved 18 cubic-inch plastic junction box for the rough-in back box. Do not use metal back boxes, which may interfere with the Bluetooth signal.

    • You may connect two 8-ohm speakers, or up to four 16-ohm speakers.
    • Power supply: 15VDC / 0.8A (12W), included.

    Terminal Reference

    Terminal Function
    V+ / GND Power (15Vdc, Ground)
    L+ / L- Speaker Output (left)
    R+ / R- Speaker Output (right)
    65 / 66 Line Output Signal (left / right)
    4 Line Output Ground (common)
    62 Amplifier Trigger Signal

    Controls

    • Max volume limit switch (rear, 2 positions: MAX / MID / LOW) — sets the maximum volume allowed in normal operation; defined by the installer.
    • Mono/stereo switch (rear) — selects mono or stereo audio output.
    • Operating key — press and hold 4 seconds to turn the Module on/off.

    LED Status Indicator

    • Blue flashing — waiting for pairing and connecting with the Bluetooth device.
    • Blue solid — Module is connected to the Bluetooth device.
    • Red solid — an external audio input (3.5mm jack) has been inserted; this overrides Bluetooth mode.

    Bluetooth ID

    Each Module identifies itself as KINGBT-XXXX (XXXX is a serial number), letting the user select the correct module when multiple units co-exist in the same installation.

    Pairing

    1. Before pairing, confirm your Bluetooth device supports A2DP / AVRCP profiles. Keep the device close to the Module during pairing.
    2. The Module remains in pairing mode for one minute after the blue LED begins flashing. If no connection is made in that time, the Module powers off and the process must be repeated.
    3. Open Bluetooth settings on your phone/tablet/PC and select the KINGBT-XXXX device to pair (only required the first time per device).
    4. Once connected, the blue LED stops flashing and stays on while the device remains within range (approx. 10 meters).
    5. The Module automatically turns off 1 minute after Bluetooth is disconnected or you leave the coverage range.

    Specifications

    Voltage 15–16 Vdc
    Consumption (Bluetooth operation) 22–111 mA
    Consumption (3.5mm jack operation) 22–99 mA
    Output (4 ohm) 5 Wrms
    Output (8 ohm) 2.5 Wrms
    Output (16 ohm) 1.5 Wrms
    Frequency Response 45 – 20,000 Hz
    SNR 84 dB
    Bluetooth Class 2, BT 2.1 + EDR, A2DP 1.2, AVRCP 1.4
    Wireless Transceiver 2.4 GHz
    RF Power 7 dBm
    Range ~10 m
    Dimensions (exterior W x H x D) 1.77 x 4.17 x 1.77 in (45 x 106 x 45 mm)

    Regulatory

    FCC ID: 2AB6X5269A. This device complies with Part 15 of the FCC Rules and Industry Canada's license-exempt RSS standards.

    Manufacturer

    Electrónica Integral de Sonido, S.A. — KBSound Inc., 245 Riverside Ave, Suite 150, Jacksonville, FL 32202 (USA) · info@kbsound.com · www.kbsound.com