Quiet Electronic Latch

Ingersoll Rand Security Technologies has introduced a quiet electronic latch (QEL) option for its Von Duprin 98/99 and 33a/35a series exit devices. The intelligent QEL solution features self-calibration, on-board diagnostics and vandal detection/response. The QEL option provides electronic unlatching of exit devices for continuous push-pull operation and/or access control. It can be activated through a building automation system, access control system or by a control system operator.

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