KSH 253201 KSH 163044
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ZUIDID
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4-20mA Iutput 48*48 Most Accurate Digital Intelligent Pid LCD Temperature Controller
Holographic diffraction grating 36x38mm 600 lines 1mm grates Optical teaching experiment Transmission grating No shell
Fresnel lens Infrared induction 100° induction angle 7M distance PIR lens high sensitivity Infrared sensing of human body
Diffraction grating Mirror double slit grating Teaching demonstration Teaching instrument grates 50x50mm Customizable