Bl12a3 Bluetooth =link= Full -

The is a Bluetooth audio receiver module frequently integrated into smart home accessories, most notably LED bathroom mirrors with built-in speakers. Core Functionality

Operates on a standard 12V DC power supply with a maximum working current of 500mA.

With Bluetooth 5.3 and LE Audio on the rise, is an inexpensive 5.0 module still worth buying? Here is why:

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Up to 10–15 meters (33–50 feet) in open spaces.

: The most common use is building custom portable speakers from scratch.

It usually charges via a modern Type-C port or Micro USB port, taking roughly 2-3 hours to reach full charge. 5. Ideal Use Cases The is a Bluetooth audio receiver module frequently

functionality is straightforward. Follow these steps to pair your device:

A: Use a high-quality 3.5mm cable, keep the device charged, and keep it as close to your phone/headphones as possible to minimize interference.

Reflects the budget price point, with a plastic-heavy construction. Here is why: If you are looking to

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| Parameter | Value | |-----------|-------| | | 2.0 + EDR or 2.1 + EDR (backward compatible with 1.2) | | Frequency Band | 2.4 GHz ISM (2402–2480 MHz) | | Modulation | GFSK (Gaussian Frequency Shift Keying) | | RF Power (Class 2) | -6 dBm to +4 dBm (typical 0 dBm) | | Receive Sensitivity | -80 dBm to -85 dBm (depending on vendor) | | Data Rate (UART) | 9600 bps to 1.3824 Mbps (default 9600, 8N1) | | Air Data Rate | Up to 2.1 Mbps (EDR) | | Operating Voltage | 3.0V – 3.6V (absolute max 3.9V, not 5V tolerant) | | Current Consumption | Tx: ~30 mA, Rx: ~25 mA, Standby: < 1 mA (Deep sleep: < 10 µA for BLE variant) | | Interface | UART (TX, RX, RTS, CTS optional), GPIO, State LED | | Antenna | On-board PCB trace antenna (gain ~1 dBi) | | Range (LOS) | 10 meters (typical indoor), up to 20 meters (open field) | | Form Factor | 27 mm x 13 mm x 2.5 mm (typical) | | Pin Pitch | 2.54 mm (compatible with breadboards and 0.1" headers) |

No. The specified working voltage is DC12V with a maximum current of 500mA. Using an incorrect voltage could permanently damage the module.