The 800 Code Commercial Outdoor Digital Remote Code Single Cylinder Silver Door Lock provides access control to rental property or business. The LS-RL4000N-S is totally weather resistant and features a more heavy duty construction. If your front door is exposed to weather conditions, this is your best option for weather protection. Another great feature is the ability to issue remote access codes, even during the same time period. The additional software package, LR-RLMSW, allows deeper control allowing the programming multiple locks and retrieving audit trail. The LS-RL4000N-S truly is the ultimate rental property lock while not commanding monthly fees!