B87 Audio RCU Starter Kit Hardware Guide



This guide uses the Telink B87 Audio RCU as an step-by-step example to show how to get the RCU sample up and running quickly. For other flavors of RCU, the steps may differ slightly, please refer to the corresponding user guide.

The Telink RCU solution supports voice collection and transmission, and can be paired with smart TVs, set-top boxes, or OTT boxes to achieve smart voice control functions. And the TLSR827x series supports single-layer PCB design to optimize the BOM cost as much as possible.

Material List


Item S/N Product Name Qty
1 TLSRGSOCBK56B Telink Burning Board (SWS BURING EVK, including DuPont wires) 1
2 TLSR8278DK48D TLSR8278 Development Board 1
3 TLSR8278DG48D TLSR8278 Dongle 1
4 TLSR8278ARC48D TLSR8278 Audio RCU 1
5 Whip antenna 2.4Ghz antenna 1
6 USB cable USB A to mini USB 2

PC installed with

AAA Batteries


The RC demo supports the following features:

  • Works with dual batteries
  • 27 valid buttons and 2-color indicating LEDs
  • Google voice service
  • Voice compressed with ADPCM, supported sample rate 16Khz/16bit
  • Repeated buttons
  • Couch mode
  • OTA firmware upgrade
  • PC tool for button display and demonstration

For detailed descriptions, please refer to the product specification document “Specification For TLSR827x-based Bluetooth LE Audio Remote Control”.

Button Layout

The appearance of the B87 Audio RCU and B87 Dongle are as follows:



Generic Bluetooth® LE RCU Solution

The demo below uses the B87 Audio RCU Starter Kit to demonstrate button function, voice test and IR function.

The guidance on Bluetooth LE

Step 1: Launch the TELINK BDT tool on PC, and program the Audio Remote Control and Dongle.

This is the RCU bin link: 8278 Bluetooth LE Remote IR.bin

This is the dongle bin link: 8278 master kma dongle.bin

This is the SDK link: TLSR827x Bluetooth LE Single Connection SDK

Step 2: Connection and pair method

Power on the RCU, and RCU will be advertise state for 60 seconds.

Plug dongle into PC, then press the SW1 and that will trigger dongle to receive advertise packets. When dongle red led is on, it indicate RCU connect to dongle.

Step 3: Bluetooth LE button and voice test method

We can just open .txt file on PC side, and when you press the number key, the number will be display in the txt file.That is button’s operation.

When need to use the voice function, you can open the PC software audacity. click the record icon to start recording. Then press and hold the MIC key MIC key over 1 second,and you will see that the audacity starts to record voice data.

The guidance on IR

Step 1: The guidance on IR

Press the switch key Switch key to switch IR mode. and the demo IR protocal is NEC.

Step 2: IR test method

Plug the IR code analyzer to PC and open the revelant PC software about IR code analyzer.

Press the button and the software will display the IR data.

Always-On Local Voice RCU Demo

Google Android TV Reference RCU Platform is based on Bluetooth LE remote control (RC) which is built on Telink TLSR827x platform, and has button function and voice command function support. The reference RCU platform is based on TLSR8270F512ET48 in conjunction with Google.

Google Android TV Reference RCU Demo

The AOV (Always-On Local Voice) RCU demo kit integrated with Alexa volume control skill is ready for quick system evaluation.


The RF4CE is an ultra power efficient RF Remote control solution developed by Zigbee Alliance. RF4CE specifies a thin network layer on IEEE 802.15.4, and the standard defines mechanism for secure transactions, discovery, and pairing. Telink support all RF4CE related profiles, and Telink RF4CE platform is certified by Connectivity Standards Alliance. Also Telink’s RF4CE solution support voice control and OTA firmware upgrades.

Online Purchase

* The B87 Audio RCU Starter Kit can be purchased online via Mouser or Taobao.
* Other Development Kits can also be obtained by contacting Telink.