The SDKBD1 is a basic low cost keyboard controller that can be used to access the functions of RS-485 CCTV equipment like Speed Dome PTZ cameras and decoders. In addition to operating a camera's PTZ functions, this keyboard can also be used to control or change a camera's focus and iris settings as well as program preset and cruise positions. Special consideration went into the design of this unit to keep its operation as simple as possible so that even a novice user will master its controls in as little time as possible. • Controls up to 32 speed domes or decoders via RS-485 • Operates PTZ as well as focus, iris, presets and cruise positions (64 presets) • Supports a communication distance of up to 3900' (1.2km) between controller and camera • User-friendly operation Specifications Maximum Device Control: 32 Control Interface: RS-485 Preset Positions: 64 Baud Rate: 2400Bps, 4800Bps, 9600Bps, 19200Bps Maximum Cable Length: 3900' (1.2km) Power Requirements: 12VDC (includes power adapter) Power Consumption: 500mA Dimensions (WxHxD): 7.4 x 2.8 x 3.8" (188 x 70 x 97mm) Weight: 1.1 lbs (500g)