Model KR3500 has an Infrared LED and a Photo-transistor with visible light cut lens on emitter and detector.
KR3500-AALF
Spares filter cartridge 2µ
Spares filter cartridge 5µ
Spares filtering nose
Model KR3500 has an Infrared LED and a Photo-transistor with visible light cut lens on emitter and detector.
KR3500-AALF
Model KR3500 has an Infrared LED and a Photo-transistor with visible light cut lens on emitter and detector.
