Patented instant release circuit - no residual magnetism Surface mounts easily with a minimum of tools Fully sealed electronics - tamper proof and weatherproof Mounted using steel machine screws into blind finishing nuts Architectural brushed stainless steel finish (US32D/630) All ferrous metal surfaces plated to MIL specification Hardware accessories available to configure any opening type include mounting brackets, housings and dress covers Ten feet [3.05m] of jacketed, stranded conductor