one piece and split-type intercom system solutions for elevator intercom

emergency video ip telephone, ask for help by merely pushing a button.

transfer wireless signal to wired signal large distance repeater transfer wireless signal to wired signal large distance repeater transfer wireless signal to wired signal large distance repeater transfer wireless signal to wired signal large distance repeater

Need to work with screen, such as TV.

touch screen Android 4.4.2 operating system wireless receiver