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China (mainland) Hong Kong Tengweida Electronic Co. Ltd’s TWD-I102-520 is a waterproof IR camera that features an anti-reflection glass and 4mm to 9mm varifocal lens, which can be easily adjusted without removing the outer metal case.
The model uses a 1/3in Sony HQ1 color CCD sensor with IR crystal filter that supports 520 TVL resolution. Its 42 IR LEDs provide 40m to 45m night vision.