4 hd bluetooth wall mount amplifier with doorbell fm radio aux input remote control for mus. active ceiling speaker set

2-channel 20w bluetooth wall-mounted amplifier supports doorbell, fm radio, aux input, remote control, music player, active ceiling spk set. Specifications:Pw 220 e: ● Power: ac220v (50hz) allow 110v-250v● Output power: 220w● Main screen size: 4 inch hd screen● Expand tf card memory: 32gb● Usb: support otg usb 2.0 32g can be read.● Output impedance: 8hp● Fm frequency: 87.5hz-108mhz● Audio s/n ratio: ±98db● Product size: 868610mmBt 54 : ● power: 4 * 10w@8 ω ● amplifier channels: 4 channels ● amplifier type: digital class d ● frequency response: 120hz-15khz (±3db) ● thd: ● s/n: >70 db ● speaker unit: 6-inch dual cone paper drivers. ● power consumption: 50w ● installation: on the ceiling. ● material: abs box with metal clamp. ● power supply: dc12v ● size: cut 18876mm ● cutout hole: ☑170mm ● net weight: 3.95 kg. (1+3)Feature:● support English french german spanish portuguese italian Six languages● Two way bluetooth (receive and transmit) can connect to bluetooth tv and bluetooth ceiling speakers by bluetooth. when you connect to a bluetooth speaker the local speakers you connect to the amplifier by the speaker cable will not have any sound.● Touch screen● Connectable doorbell (no power supply)● Two voices in the terminal● Bluetooth distance: 10m● Infrared remote control distance: 10m● Radio: built-in all digital auto-tuning radio, 30 radio stations.Package included:1 x smart touch screen wall amplifier4 x ceiling speakers (1 master + 3 slaves)1 x installation box1 x remote control1 x mounting bracket and screws