CSB-180B Bluetooth wireless ceiling speaker is an active ceiling speaker with a built-in amplifier. It can be paired with the Bluetooth connection of a mobile phone, tablet or computer, or connected via an external 3.5mm headphone audio cable. The speaker is equipped with a 1" coaxial tweeter, which can provide clear treble performance, and the other is a 2.5" full-range unit, which provides delicate sound effects.
CSB-180B is easy to install. It only needs to be connected to 110V or 200V mains, and then it can be used when installed in the ceiling.