The bti-029 is a compact 2-in-1 Bluetooth 5.0 optical audio transmitter and receiver that switches between TX (transmit) and RX (receive) via a dial-mode switch, supporting both AUX and SPDIF (optical) connections.
In TX mode the device can connect to two stereo Bluetooth speakers or headsets simultaneously so both output sound; in RX mode it can pair with two phones but only one source plays at a time (the device that starts playback first). The adapter uses a CSR BC8670 chip and Bluetooth v5.0 with Class II transmit power for up to approximately 10 meters depending on connected devices.
Specifications
- Bluetooth chip: CSR BC8670
- Bluetooth version: 5.0
- Frequency range: 2.402–2.480 GHz
- Pairing/security keys: 0000, 1111, 1234, 8888
- Battery: 350 mAh rechargeable Li‑polymer
- Battery life: ~15 hours (AUX RX/TX); ~12 hours (SPDIF RX/TX)
- Charging: 5V DC ≥ 300 mA, charging time ≈ 2 hours
- Operating temperature: -10 to 55 °C
- Net weight: approx. 38.6 g
- Size: 60 × 60 × 18.4 mm
Size Guide
- Footprint: 60 mm square; thickness 18.4 mm — fits on a media shelf or portable audio setup
Intended use: switch between transmitting and receiving digital or analog audio for Bluetooth speakers, headsets, phones, or SPDIF-capable equipment.
