... Detector With Dual Leds 1.Unique structure with dustproof, anti-fly, anti-light design 2.certificated product 3.prefer 4 Wire Photoelectric Type Smoke Detector With ... Dual Leds CY719 Feature and specification 1.CPU processing ... sensentivity adjusted9.Unique structure with dustproof, anti-fly, anti-light design10.4-wired smoke detector( (for home ...