The EM5000G/LF series are dual operating 12/24VDC Fail-Safe electromagnetic lock in stainless steel encase body, highly quality plated for more corrosion resistant and instantly release to unlock when powered OFF without any residual magnetism. The lock fixing arrangement can be on the front or side, for use on swing or sliding interior or exterior gate perimeter security with Lock status monitoring sensor and built-in surge protection. This new design has been tested to be fire rated for 3 hours and product has been classified to be environmental friendly.