AutoLo?c’s Suicide Door Dead Lock Safety System increases the safety and security of your passengers. Thick aluminum plates and unique locking cam design provide a long life of smooth operation. System comes complete with all necessary hardware. Available with remote and ignition activation. Great for all types of doors including cargo, sliding, and overhead. Three models are available: the DL1000 (manual operation), the DL2500 (electric operation), and the DL2550 (electric operation w/LED status indicator.) Features a Limited Lifetime Warranty.Insist on the best, and insist on AutoLoc and you be glad you did.