The AW-D135A Addressable manual call point is mainly designed to be use with an intelligent two-bus control system. If it is pressed after a fire is manually confirmed, an alarm signal may be sent to a fire alarm control system which will, after receiving the alarm signal, display the coded address and the equipment status of the manual fire call points. When the manual fire call points is operating normally, the red indicator will blink; when there is a fire alarm, it will remain lit. The GT-D135A Addressable supports electronic coding, more suitable for engineering application convenient