Deutsch 
English Compactly dimensioned Siemens QRB4B yellow flame sensor with permanently connected, 2-core thermoplastic cable and soft plastic plug for attachment to the burner. For monitoring yellow-burning oil flames in conjunction with automatic burner controls LME7 (on request), LME8 (on request), LMO, LMV2 and LMV3. The correct polarity must be observed!
Type QRB4B-B050B70B, housing colour red with increased sensitivity for frontal and lateral (90°) illumination
Housing length: 68 mm
Cable length: 500 mm
Dimension length: 70 mm
Siemens article no. S55723-S214-A100
Type QRB4B-B050B70B, housing colour red with increased sensitivity for frontal and lateral (90°) illumination
Housing length: 68 mm
Cable length: 500 mm
Dimension length: 70 mm
Siemens article no. S55723-S214-A100