32 channel RP206 network fire alarm terminal

Bihang XD-15

Active speaker XG-80

Fixed voltage and fixed resistance amplifier DY-6110

4G receiving device 1D-01

Wireless receiving sound column 1D-50

DC constant impedance amplifier XG-5

IP Outdoor Waterproof Sound Column - Economy IP805

I3 industrial computer (15.6 inches)

Inductive Audio Alarm - AC/DC GYPD-01