Detailed Product Description 1. Night Vision distance 30m 2. Built-in 35pcs 5mm led 3. Lens Switchable 4. Super night vision technology Ⅱ(SNVⅡ) 5. Use of high quality aluminum alloy, easy for heat emissions 6. Depart led, antifogging and anti-reflection 7. Waterproof and sunproof design for outdoor application 8. Daytime Color cast, True color Night 9. Low power, Long life, Energy saving, Lighting Function Technical Parameter Model CL-831S CL-831H CL-831X CL-831T Image Sensor 1/3"SONY Super HAD CCD 1/4"SHARP Super HAD CCD 1/4" SONY Super HAD CCD Scanning Area 4.8mm(H)×3.6mm(V) 36.mm×2.7mm(V) Horizontal Resolution 480TVL 540TVL 420TVL Minimum Illumination 0LUX(IR ON) S/N Ratio >48dB Gamma Corrections 0.45 Electronic Shutter PAL:1/50～1/100000sec NTSC:1/60～1/100000sec Gain Control Auto Back Light Compensation Auto White Balance Auto Synchronous System Internal synchronization Operating Temperature -20-50oC Protection Rate IP66 Lens Mount 3.6/6/8/12/16mm Power in DC12V 0.5A Video Output 1.0Vp-P/757Ω(BNC) Dimensions(MM) 71×135 Weight 490g We sincerely do cooperation with you for long-term,and look forward to hearing from you soon!Should you have any further question, to contact us by email or MSN,I will give you more information about the White Light Technology!