UGREEN 45812 CM872 Bluetooth 5.4 TX/RX Audio Adapter

Overview

The UGREEN CM872 (45812) is a small white two-way Bluetooth 5.4 adapter with an attached 3.5 mm plug and a rechargeable battery. In transmitter mode it sends sound from an aircraft seat socket, TV or other wired source to Bluetooth headphones; in receiver mode it takes music from a phone into a wired speaker or car aux input. It runs for up to 16 hours sending or 18 hours receiving.

Is it right for you?

• Suits in-flight entertainment, TVs, computers and other devices with a 3.5 mm headphone output when you want to use Bluetooth headphones.
• Suits a speaker or stereo with a 3.5 mm input when you want to stream from a phone.
• Not compatible with AirPods Pro 2, AirPods 4 or AirPods 4 ANC.
• Not for musical instruments, keyboards, mice, printers, file transfer, optical audio or microphone return, and not water resistant.

Key features

• Bluetooth 5.4 with transmitter and receiver modes.
• Attached 3.5 mm audio plug.
• Dual pairing: two headphones or two sources, depending on mode.
• Up to 16 hours in transmitter mode or 18 hours in receiver mode; USB-C rechargeable.
• Works in the 2.400 to 2.4835 GHz band.

What else you need

A 3.5 mm socket on the wired device, Bluetooth headphones or a Bluetooth phone at the other end, and a USB-C cable for charging.

Installation

Select transmitter or receiver mode to match the wired device, plug in the 3.5 mm plug and pair. It reconnects to saved devices when the selected mode matches.

Before you buy

• AirPods Pro 2, AirPods 4 and AirPods 4 ANC are listed as unsupported.
• On aircraft, follow crew instructions, use only permitted headphone sockets and keep wireless off whenever directed.
• Connect only to headphone or line-level sockets, never to speaker-level or unknown signals.
• Keep it dry, out of direct sun and away from heat; start at low volume and take listening breaks.
• Do not crush, puncture, burn or charge a wet, swollen or hot unit, and keep it away from small children.