SIEMENS燃烧器火焰探测器QRB1A-A现货报价西门子

Photoresistive flame detectors for use with Landis & Staefa burner controls, for the supervision of oil flames in the visible light spectrum. The flame detectors are used primarily in connection with burner controls for small burners.SIEMENS西门子光敏电阻  SIEMENS西门子光敏电阻QRB1A-A  SIEMENS西门子光敏电阻