---
type: product
schema_version: 1
stock_number: "49960-1"
canonical_url: "https://www.artisantg.com/TestMeasurement/49960-1/Black-Box-SP400A-R3-Opto-Isolator"
json_url: "https://www.artisantg.com/TestMeasurement/49960-1/Black-Box-SP400A-R3-Opto-Isolator.json"
generated_at: "2026-11-07T01:08:19.248Z"
last_updated: "2026-04-06T13:32:15.610-05:00"
---

# Black Box SP400A-R3 Opto-Isolator

_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: Black Box
- Model: SP400A-R3
- Condition: Used and in Excellent Condition
- Price: Quote only
- Availability: In stock
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 5 lb
- Shipping dimensions: 14X14X6 in

## Categories

- Test Equipment > Optical Test > Couplers (primary)

## Details

### Configuration

- Speed: Up to 19.2 kbps
- Connectors: (2) DB25 Female
- Isolation: 2500 VRMS

## Images

- <https://www.artisantg.com/itemimages/black_box_sp400a_r3_view1_202191314131.jpg>
- <https://www.artisantg.com/itemimages/black_box_sp400a_r3_view2_202191314131.jpg>
- <https://www.artisantg.com/itemimages/black_box_sp400a_r3_view3_202191314131.jpg>
- <https://www.artisantg.com/itemimages/black_box_sp400a_r3_view4_202191314131.jpg>