HP Agilent 81634B Optical Power Sensor Interface Module Lightwave Mainframe Unit

Agilent 87421A Supply Lightwave Detector Power Electric System Module Unit

HP/Agilent 81531A Optical Power Sensor Module 800–1700 nm for 8153A 223333

Agilent 81636B Optical Power Sensor Module Keysight HP Unit Made in Germany

Agilent 81633A : 800nm - 1700nm Optical Power Sensor Module (1787)

HP - Agilent - Keysight 81634B Optical Power Sensor Interface Module

Agilent (HP) 34907A DIO/Totalize/DAC Multifunction Module