... . 420TVL;520TVL; 4. embedded type ST-SP8506X-B Chinese(English) high speed domProduct Description3.7~14.8mm lens, Support power synchronization ... continuous rotation, vertical 90° rotation, with automatic rollover, manual speed 0.9°-180°/SEC, English or Chinese menu programming optional ... , 16 presets for each line ,cruise time and speed can be optionalID range0-255Location accuracy±0.1°ActionGuard ...