The SP-C250 dome camera contains a 1/3 inch Sony image sensor and Sharp CCD chip to provide mid to high resolution images. The SP-C250 series have three available IR LED camera types: fixed focus, vari-focal and day and night. The case adopts a 2.5 inch high hardness strengthen plastic ball able to bear 10 strikes. The base adopts an acid/oxidize-resistant aluminum alloy positive pole.