... . 420TVL;520TVL; 4. embedded type ST-SP8506X-B Chinese(English) high speed domProduct Description3.7~14.8mm lens, Support power ... rotation, with automatic rollover, manual speed 0.9°-180°/SEC, English or Chinese menu programming optional, Support PELCO-P, PELCO-D ... speed limit, and support left and right automatic scanning , English OSD menu is optional, Guarding function, after the machine rest ...