This is an Agilent 81619A Lightwave Meter Module..
Unit self tested O.K. and zeroed with functioning Agilent 8163A Lightwave meter (BMI SKU # 60823) and functioning Agilent 81625B optical sensor head (BMI SKU # 61164).
Cosmetic Condition : excellent
Key Features & Specifications from Agilent/Keysight website:
Fully compatible with all 8162x Optical Heads
fits in all 8163/8164/8166-series
2-channel option





