The Sony BRC-H900 is an HD video PTZ camera unit. The unit consists of the pan/tilt module and the camera head and lens. The BRC-H900 is switchable between 59.98 and 50 Hz standards (NTSC and PAL), and simultaneously outputs both HD/SDI and SD video. This feature makes it well suited for facilities that are planning to transition to HD, as you can shoot SD now, and change over to HD by simply using a different output on the unit.Remote operation is a major component of the BRC-H900's design. The included Sony Remote Commander utilizes IR to control the unit, which also has a built-in 3-position IR selector switch, allowing individual control of adjacent units. Additionally the optional Sony RM-BR300 remote control unit can control the BRC-H900 when connected to the unit's built-in RS-232C or RS-422 ports using Sony's VISCA protocol. The RM-BR300 can individually control up to 7 cameras daisy chained together. Installation of an optional IP controller card in the expansion slot allows for remote operation over IP.