Alert4U2 3-button, w/o built-in logic

A4U Alert Phono is a wireless Alarm point in our A-Call series.
This unit is intended to be used as a wireless alarm point in situations where fixed buttons are required but no need for wiring. The unit contains onlu one red button.

A4U AIO is a wireless I/O module with pullcord in the A-Call series.
This unit is to be triggered with the pullcord or via the wired I/O contacts.

A4U AIO has additionally two wired inputs and two wired outputs that can be independently controlled.