Turret interface control box

Interface for turret control.

When a floor detects a fire alarm (DM or detection), it informs the turret interface, which sends a command to the turret.

Ventilation operation is controlled by a pressure switch. If the pressure switch does not change state, the CDTOURLED interface engages the emergency hatches via the D.A.S. output.
The position of the hatches can be monitored by the status of the " standby " and " safety " contacts.