1. High-pitched silk membrane, 4-inch composite basin, professional frequency division, frequency range of 55Hz-20KHz, sensitivity of 87dB, appearance size: Ф175mm*80mm (white magnetic-absorbing borderless net cover).
Opening size: Ф150mm, power range: 10-30W.
2. YZ202BT is powered on by Bluetooth by default, and AUX and TF can be customized as startup music, and the welcome message can be played automatically when powered on. I/O port control, RS485, power amplifier and Bluetooth speaker are integrated, and power supply is provided.