Strike for firebreak doors Electromagnetic door holders are used on fire doors. The door holders keep the doors open and by interrupting the power supply in the event of fire danger they release the door (positive security) to prevent the spread of smoke and fire. Main features: Passed the "fire resistance test" in an authorised laboratory.Reversible and symmetrical case.Manual push-button that cuts the power supply to the electromagnet, releasing the door leaf.Possibility of installation in any door that must remain open.Very reliable. Does not include any mechanical functional component.Silent operation.* We recommend downloading the technical data sheet below to see all the options. Downloads TESA_CERRF_Technical_document_1.pdf (.pdf, 71 kB) Close Electric strike rim modelRim electric strikes compatible with panic exit devices. Mortise electric strikeTESA electric strikes are installed in the frame allowing… Electric strikes for thermal break aluminium stilesNarrow electric strikes.