If you are using a PTZ camera without a DVR with PTZ controls, then you will need this PTZ Control Board.

Features:
LCD display
Control keys
Joystick
Can control up to 128 speed domes or decoders
Full lens and speed control of cameras
Manual or automatic control

Specifications
Power: DC12V
Connection: RS-485
Range: 1500M (0.5MM twisted pair)
Size: 7.9"(L) x 6.6"(W) x 1.8"(H)