---
type: product
schema_version: 1
stock_number: "54891-5"
canonical_url: "https://www.artisantg.com/TestMeasurement/54891-5/EigenLight-420-WDM-Power-Monitor-Attenuator"
json_url: "https://www.artisantg.com/TestMeasurement/54891-5/EigenLight-420-WDM-Power-Monitor-Attenuator.json"
generated_at: "2026-11-06T23:46:20.746Z"
last_updated: "2026-09-21T19:05:58.420-05:00"
---

# EigenLight 420 WDM Power Monitor-Attenuator

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: EigenLight
- Model: 420
- Condition: Used and in Excellent Condition
- Price: Quote only
- Availability: Not in Stock
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 2 lb
- Shipping dimensions: 10X5X5 in

## Categories

- Test Equipment > Optical Test > Attenuators (primary)

## Details

This EigenLight Model 420 WDM Power Monitor-Attenuator is used and in excellent condition. Optical Interface: SC/APC.

Our Technician Measured: Insertion Loss < 1.0 dBm

Model: 420-21

420: -40 to +20 dBm Power Range

2: Low Polarization Dependence
 - Polarization Stability: <0.1 dB
 - PDL: <0.1 dB
 - Directivity: >20 dB

1: WDM:
 - Fiber Type: Single Mode
 - Range: 1520 - 1620 nm
 - Calibration: 1550 nm

## Images

- <https://www.artisantg.com/itemimages/eigenlight_420_sp_apc_view1.jpg>