{"product_id":"2-in-1-bluetooth-5-4-audio-adapter-aux-receiver-transmitter","title":"2-in-1 Bluetooth 5.4 Audio Adapter – AUX Receiver \u0026 Transmitter","description":"\u003ch2\u003e2-in-1 Bluetooth 5.4 Audio Adapter – Wireless AUX Receiver \u0026amp; Transmitter\u003c\/h2\u003e\n\u003cp\u003eTransform any wired speaker, car stereo, or headphone into a wireless Bluetooth audio device — or stream audio from a non-Bluetooth source to your Bluetooth earbuds. This compact \u003cstrong\u003e2-in-1 Bluetooth 5.4 adapter\u003c\/strong\u003e switches seamlessly between \u003cstrong\u003eRX (Receiver)\u003c\/strong\u003e and \u003cstrong\u003eTX (Transmitter)\u003c\/strong\u003e modes, giving you total flexibility for home, car, and on-the-go use.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth 5.4\u003c\/strong\u003e — faster pairing, more stable connection, and extended wireless range up to 10 metres in open areas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2-in-1 RX \/ TX Modes\u003c\/strong\u003e — use as a receiver to stream music wirelessly to a wired speaker, or as a transmitter to send audio from a non-Bluetooth device to your wireless earbuds\/speakers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5mm AUX Connection\u003c\/strong\u003e — universal compatibility with car stereos, home hi-fi systems, speakers, and headphones\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 180mAh Battery\u003c\/strong\u003e — rechargeable via USB 2.0; red LED stays on during charging and turns off when fully charged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicators\u003c\/strong\u003e — blue light flashes\/stays solid in RX mode; red light flashes\/stays solid in TX mode for at-a-glance status\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design\u003c\/strong\u003e — measures just 94 × 20 × 12 mm and weighs only 38 g; slips easily into a pocket, bag, or glovebox\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCar-Ready\u003c\/strong\u003e — officially supports vehicle-mounted use, making it a simple upgrade for older car audio systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Antenna\u003c\/strong\u003e — clean, snag-free design with no external antenna\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBluetooth Version\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWireless Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 10 m (open area)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e94 × 20 × 12 mm (3.70 × 0.79 × 0.47 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003ch4\u003eRX (Receiving) Mode — Stream to a Wired Speaker\u003c\/h4\u003e\n\u003col\u003e\n  \u003cli\u003ePress and hold the power button for 3 seconds to turn on.\u003c\/li\u003e\n  \u003cli\u003eSwitch the mode button to the \u003cstrong\u003eRX\u003c\/strong\u003e position — the blue light will flash.\u003c\/li\u003e\n  \u003cli\u003eOpen Bluetooth on your phone, search for \u003cstrong\u003eM1\u003c\/strong\u003e, and tap to connect. The blue light stays solid once connected.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eTX (Transmitting) Mode — Send to Wireless Earbuds\/Speakers\u003c\/h4\u003e\n\u003col\u003e\n  \u003cli\u003ePress and hold the power button for 3 seconds to turn on.\u003c\/li\u003e\n  \u003cli\u003eSwitch the mode button to the \u003cstrong\u003eTX\u003c\/strong\u003e position — the red light will flash.\u003c\/li\u003e\n  \u003cli\u003ePut your Bluetooth headphones or speaker into pairing mode; the adapter connects automatically. The red light stays solid once connected.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Bluetooth 5.4 Audio Adapter (M1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/clip-on-car-fan-led-display-199-speeds-usb-type-c\"\u003eClip-On Car Fan LED Display 199 Speeds | USB \u0026amp; Type-C\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/cordless-rechargeable-milk-frother-coffee-foam-egg-whisk\"\u003eCordless Rechargeable Milk Frother – Coffee Foam \u0026amp; Egg Whisk\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/handheld-milk-frother-battery-operated-whisk-foam-mixer\"\u003eHandheld Milk Frother – Battery Operated Whisk \u0026amp; Foam Mixer\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between RX and TX mode on this Bluetooth adapter?\u003c\/h4\u003e\n\u003cp\u003eA: In \u003cstrong\u003eRX (Receiver) mode\u003c\/strong\u003e, the adapter connects to your phone or tablet via Bluetooth and outputs audio through its 3.5mm AUX port to a wired speaker or car stereo — essentially making a wired device wireless. In \u003cstrong\u003eTX (Transmitter) mode\u003c\/strong\u003e, the adapter plugs into a non-Bluetooth audio source (like a TV or old stereo) and wirelessly streams that audio to your Bluetooth headphones or speakers.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I charge the Bluetooth 5.4 adapter?\u003c\/h4\u003e\n\u003cp\u003eA: Connect the adapter to any USB 2.0 power source using the included USB cable. The red LED indicator stays on while charging and switches off automatically when the 180mAh battery is fully charged.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this Bluetooth adapter compatible with car audio systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the adapter officially supports vehicle-mounted use. Simply plug it into your car stereo's 3.5mm AUX input in RX mode and pair it with your phone to stream music wirelessly, giving older car audio systems a quick and easy Bluetooth upgrade.\u003c\/p\u003e\n\u003ch4\u003eQ: What should I do if my Bluetooth earphones won't connect in TX mode?\u003c\/h4\u003e\n\u003cp\u003eA: First, confirm the adapter is set to TX mode (red light flashing). Some Bluetooth earphones require a factory reset\/initialization before they can pair with a new device. Refer to your earphones' manual to reset them, then attempt pairing again with the adapter in TX mode.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between RX and TX mode on this Bluetooth adapter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In RX (Receiver) mode, the adapter connects to your phone or tablet via Bluetooth and outputs audio through its 3.5mm AUX port to a wired speaker or car stereo — essentially making a wired device wireless. 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