Security CCTV System Multi-function Controlling Keyboard, RS-485 The keyboard controller is designed to control and operate analog and AHD high speed dome camera and digital recorder, it has built-in multi-protocols, such as PELCO-D, PELCO-P and so on, as well as digital video recorder control protocols , the keyboard controller adopts RS-485 communication port, multi-baud rates are available. The keyboard controller can control and operate the cradle head, lens, presets, tour, trace scanning and menu setting,the unique one-bar control could flexibly control the action of cradle head and lens. The keyboard controller can control the operation of multi-picture monitoring, video recording, playing, play forward, play backward, information display and menu setting. Built-in a variety of intelligent cameras, DVR control protocol, 5 commonly used control protocol for choice. Keyboard with password management, the need to enter password to operate. LCD display monitor number, camera number, recorder number and operating status. Four-dimensional vector variable speed controller with a unique control capabilities, flexible control over the full range of motion and control PTZ camera focus, zoom and aperture. Has set up a smart camera, DVR menu functions. With fast set, called the smart camera Presets, queues and other functions. control of DVR with multi-screen monitoring, recording, playback, fast forward, rewind and other functions. key tone, backlit LCD screen can be set via the keyboard menu. Communication using RS-485 half-duplex mode, the keyboard can be connected to control 16 to 32 intelligent camera or digital video recorder, control distance of 1,500 meters. Dimension:255(W) x150(H) x120(D)mm / 10.03'' x 5.9'' x 4.72'' Weight:0.9K/ 1.98 pounds Item Package includes: 1 x CCTV System Multi-function Controlling Keyboard 1 x DC12V Power adapter (US power plug ) 1 x English Manual