[. . . ] Add a Keypad Anywhere! It's a Remote Control Where and When You Need It Most KP-900 Wireless Keypad/Remote Wall Mounted Keypad and Hand-Held Remote Control Mounts Anywhere, Everywhere No wires to pull--the IR/RF KP-900 Keypad Remote is completely wireless. Powered by four easy-to-replace AAA batteries, it can be easily removed from the wall bracket for convenient handheld use. [. . . ] The combination of the KP-900 Narrow Band RF Transmitters with the RFX-250 provides ultra reliable RF via the extraordinarily specific narrow band reception of the RFX-250. RFX-250 Narrow Band RF Receiver (Included with the MRF-350 and MSC-400 System) Options for the Volume and Mute Buttons for Systems with In-Wall Volume Controls The KP-900 is equipped with options for the Volume/Mute positions. In systems with in-wall volume controls that really have no remote controlled volume and mute, you can opt to install one of the other choices. Note: Buttons are not designed to be removed once installed. Windows Based PC Software The KP-900 Editor is completely text based, a custom configuration for the most demanding client can be set up in a fraction of the time it takes with many other remotes. Your Walls are Sealed Up You don't want the expense or inconvenience of construction or running wires through your walls. Adding a wireless KP-900 solves this problem and provides better control everywhere you need it. The RFX-250 is included with both the MRF-350 Routing Base Station and the MSC-400 Master System Controller. The KP-900 is compatible with the new MSC-400 "Trigger" protocol, which enables complex macros, stored in the MSC-400 to be individually triggered with a single button push on the KP-900 regardless of the interference and noise in the environment. The combination of very narrow transmission of digitally encoded packets sent THREE times at digital speeds in milliseconds, assures that every button press on the remote will be received by the MSC-400. Narrow Band The MSC-400's sophisticated error RF Transmission correction circuitry stores all three packets and compares them. Once two packets are identified as identical, the MSC-400 goes to work. This new technology not only increases range, but increases reliability by a vast margin. [. . . ] It's like adding new system in another room. MSC-400 Master System Controller Integrated Sound Signaling The KP-900 incorporates a small speaker for beeps. Anytime you press a button, the KP-900 signals that it has understood your command with a beep sound. Blank COMPLETE CONTROL TM [. . . ]