OZEL-RF-111 R/L-V10 Software Based Hotel Door Lock Software Based Hotel Door Lock Universal Lever Compatible with HMS Can have multiple guest cards and multiple management cards Two Emergency pass key Hidden Screws 1.5v battery-4 nos. DC-6.5v. +- .5v (Alkaline Batteries) Compatible with data collector reader Low battery indicator Alarm when door not closed properly Dual circuit design Invisible/hidden cylinder Door Thickness 38-45 MM Dead Bolt Low Cost