Fire door accessories such as smoke and heat detectors can be used to detect real-life fire situations whilst the use of fire control panels or solenoids can trigger the controlled activation of a fire shutter.

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PP400 - Brake release solenoid with auto reset and fusible link. Activation via a 24Vdc fire signaller fusible link.  The PP400 can be reset using 240Vac, replacing the fusible link or operating the door to the open position.