The DAE3000 and DAE4000 are electromagnetic locking devices for safety exits with single or double leaf double action swing doors. The devices lock the door within a tolerance of +/-10 mm. On the rim installation version, the lock devices and strike plates are protected by casings. They operates with a 24V DC/500mA or 48V DC/250mA power supply and use a retractable roller latch to hold the door in the closed position with a holding force of 500 Kg, while position sensor contacts on the latches may be used to generate door status signals. The DAE4000 is intended for mortice installation, while the DAE3000 is the rim lock version.