Big size Infrared sensor fresnel lens 1.Original manufacturer 2.MOQ:1000pcs 3.Free samples are available 4.Lead time:3days Big size Infrared sensor fresnel lensFresnel lens is a lens that receive the infrared ray from motioning person,help the PIR Sensor work better.Specification:1.Overall size:54mm2.Lens size:44mm3.Focal length:21mm 4.Detectable distance: 10m5.Viewing angle:120°6.Material: HDPE7 ...
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