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Compact rectangular Bluetooth adapter with LCD display and 3.5mm optical ports

KAIY C41S Bluetooth Transmitter Receiver 3.5mm Optical

SKU CH-926M-5Y3ZG

A 3-in-1 Bluetooth adapter that transmits TV audio to two headphones or receives music to a stereo via optical and 3.5 mm connections

  • Audio channels2
  • Connection typesAuxiliary
  • Power supply5 V DC
  • Size and weight3.6 in × 0.84 in × 4.11 in
  • Key featuresBluetooth transmitter for tv
  • Streams TV audio wirelessly to two headphones simultaneously
  • Switches between transmitter and receiver modes for versatile setups
  • Low-latency audio keeps sound in sync with supported headphones
  • Connects via optical or 3.5mm AUX to most televisions
  • Compact 3.6 × .84 × 4.11 in design fits any entertainment center

Dual-mode Bluetooth adapter

The KAIY C41S works as a transmitter sending TV audio to wireless headphones or as a receiver streaming music to a wired stereo system. A physical TX/RX switch selects the direction. Two Bluetooth headphones can be paired at once for shared listening. The unit is not compatible with Apple AirPods.

Optical and 3.5 mm connections

Both optical and auxiliary ports are provided for input in transmitter mode and output in receiver mode. A bypass function lets the receiver stay connected to a sound system without unplugging cables. All required audio cables are included in the box.

Compact form factor

The adapter measures 3.6 in by .84 in by 4.11 in and runs from a 5 V DC supply. Low-latency audio sync requires headphones that also support the same low-latency decoding; standard headphones will exhibit a normal delay. TF card playback is also supported for standalone music.

How it compares

Measured against everything we stock in Wi-Fi & Bluetooth Audio Devices, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 91% of the 297 comparable items (median $63.99).

Specifications

Product
Brand nameKAIY
Model nameC41S
Part numberC41S
Audio & video
Audio channels2
Ports & slots
Connection typesAuxiliary
Power
Power supply5 V DC
Size & build
Size and weight3.6 in × 0.84 in × 4.11 in
More details
Remote controllerNo

Questions about this item

Will the 5 V power supply need replacing over time?

The unit runs on a 5 V DC supply; keep the adapter and cable in good condition and replace only if the connector or cable shows wear.

What limits how long I can stream to two headphones continuously?

Continuous operation is limited by the 5 V power source staying connected; the adapter has no internal battery.

How much heat or noise does the adapter produce when running all day?

The compact 3.6 in x 0.84 in x 4.11 in enclosure has no fan and draws only low‑power 5 V DC, so it runs silently and stays cool to the touch.

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