Notes about OperationThis section explains a few items that should be remembered whencarrying out operation.efore Using -----------------------------------------36Connecting the AC Adaptor --------------------------- 36LED Lamps before Starting Operation -------------- 36Useful Features and Functions -----------------37Changing Settings during Operation --------------- 37Registering Remote Units via an RTR-500 ------- 37LED Lamp Display ---------------------------------38External Contact Output / Input Terminals ---39What is the External Contact Output? ------------- 39What is the External Contact Input? ---------------- 39Installing and Removing Wires ----------------------- 39Uninstalling the Software -----------------------40Product Specifications ----------------------------42RTR-500NW/500AW ------------------------------------ 42Software (RTR-500W for Windows) ----------------- 44Options -----------------------------------------------45