SMK-H is an outdoor IP65-rated vandal-resistant metallic RFID reader with a back-lit keypad. SMK-H has a built-in 12V relay contact which can be connected directly to either an electric strike or magnetic door lock. For the highest level of security and programming flexibility, SMK-H also has a built-in Wiegand-Out port which can be connected to most any access control panel (including ZKAccess C3 and InBio door controllers).