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Description:Specifications: 1) Filter size: 110 x 90 x 9mm 2) Viewing area: 98 x 40 or 90 x 40mm 3) Light state: DIN.3 4) Dark state: DIN.9-13 5) Switching time: 1/20000s 6) Delay time: 0.6s 7) Power on/off: fully automatic 8) Power supply: solar-li, no battery change required 9) Rate of UV transmittance: 313nm<0.00006%, 365nm<0.00006% 10) Rate of IR transmittance: 780~1300nm<0.003%, 1300~2000nm<0.009% 11) Weight: 400g