> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Bluetooth 5.0 Audio Receiver Board-Controllable Volume **Type:** Product page · **SKU:** DFR0719 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/bluetooth-5-0-audio-receiver-board-controllable-volume.html ([markdown](https://core-electronics.com.au/bluetooth-5-0-audio-receiver-board-controllable-volume.html.md)) This is a small size and cost-effective Bluetooth 5.0 Audio Receiver module with auto-reconnect feature. It supports a wide range power supply of 3.7V~24V and comes with a function button. ## Pricing - **Price:** $7.20 (inc GST) — $6.55 AUD, exc GST - **Quantity discounts:** 6+ $6.22 (exc GST) · 12+ $5.95 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 24 and Aug 27. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0719:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DFR0719:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description This is a small size and cost-effective Bluetooth 5.0 Audio Receiver module with auto-reconnect feature. It supports a wide range power supply of 3.7V~24V and comes with a function button. Dial the button to the left and right to adjust volume, and press it to pause or play. You can use this module to remake your loudspeaker into wireless. ![Bluetooth 5.0 Audio Receiver Board-Controllable Volume - Diagram](https://core-electronics.com.au/media/wysiwyg/product_info/dfr0719-diagram.jpg) **Operating Instruction** After the power is turned on, the blue indicator flashes quickly, and then the module enters the Bluetooth mode; After playing the “Beep”, it goes into the pairing mode, waiting for pairing; Turn on the Bluetooth of a phone, “XY-WRBT”(module Bluetooth name) will be searched and displayed, click “XY-WRBT”to connect to the board. It connects successfully with a Beep. When the indicator is always on, you can play your music on the phone, and the indicator keeps slowly blinking when playing music. **Scenario** **![Bluetooth 5.0 Audio Receiver Board-Controllable Volume - Scenario](https://core-electronics.com.au/media/wysiwyg/product_info/dfr0719-scenario.jpg)** **Note** 1. The decoder board will automatically turn off when the voltage of the power supply battery is lower than 3.3V. It can be turned on by replacing the battery or short circuit the on/off contacts for 2 seconds when the current battery is fully charged. 2. Noise may occur when the voltage of the power supply battery is too low, which also indicates it needs to be recharged. 3. Since there is no lithium battery protection circuit on the decoder board, it is recommended to use this module with a [Lipo Charger board](https://core-electronics.com.au/lipo-charger-microusb.html). 4. Pay attention to the electrostatic protection. Since the Bluetooth chip is very sensitive to static electricity, you must discharge the static electricity on your hand to avoid causing damage to the chip when touching it with a bare hand. 5. Bluetooth antenna signal is easy to be influenced by high-frequency or strong electromagnetic signal, so please try to keep the module away from radio transmitting devices, and this board should not be placed close to any metal objects. **Specification** - Power Supply: 3.7V-24V - Bluetooth Version: 5.0 (Backward compatible with Bluetooth 4.2, 4.1, 4.0) - Transmission Distance: 15m(Visible) - Audio Decoding: WAV, APE, FLAC, MP3 - Dimension: 30\*44mm/1.18\*1.73” **Shipping List** - Bluetooth 5.0 Audio Receiver Board-Controllable Volume x1 ## Guides for this product - [DIY 10W Bluetooth Speaker - No Code Needed – How to use a Bluetooth 4.2 Audio Receiver Board with Onboard Amplifier (MH-M38)](https://core-electronics.com.au/guides/wireless/mh-m38-bluetooth-10w-speaker/) ## Videos for this product - [DIY USB Boombox with a 4.2 Bluetooth Audio Receiver (MH-M38) - Zero Code!](https://core-electronics.com.au/videos/diy-usb-boombox-with-a-42-bluetooth-audio-receiver-mh-m38-zero-code) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0719-1.jpg)