Kalatel Ktd-304 PTZ Security Camera Controller
Kalatel Multiplexor Interface to control a multi-channel multiplexor if still available. Joystick controller uses standard ASCII commands so it is capable of controlling a variety of brands of PTZ cameras and can control several PTZ cameras within a system.
specs at https://www21.ssldomain.com/selectsecurity/admin/Specification/KTD-304-spec.pdf
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