Power dips trap people between floors. An elevator ARD (automatic rescue device) is the compact answer many codes expect: detect loss of mains, run briefly on batteries, move to a safe floor, open doors, shut down.

Check battery capacity against load and travel, inverter compatibility, and who replaces batteries on what interval. Quotation language matters — “ARD ready” is not the same as “ARD included.”

Building generators may keep firefighter cars alive; ARD covers short outages on individual passenger units. Plenty of towers need both. During commissioning, test the rescue floor logic instead of assuming it.

RITECH scopes ARD on export passenger projects when the destination requires it. Say so in the order; do not discover the gap when the first site blackout happens.