Network Multimedia Teaching Speaker T-7707B

I5 industrial computer (17.3 inches)

Bihang BG-15

Car mounted wireless speaker SP-100K

Sound column YZ-30

Inductive Audio Alarm - AC/DC GYPD-03

Transmission equipment TX-700

IP External Waterproof Sound Column - Engineering Type IP703

Wireless receiving sound column 1DTS511

4G transmitter TX-710