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type: product
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stock_number: "69704-28"
canonical_url: "https://www.artisantg.com/69704-28/Keytek-E502B"
json_url: "https://www.artisantg.com/69704-28/Keytek-E502B.json"
generated_at: "2026-11-07T08:08:44.986Z"
last_updated: "2026-10-14T13:00:51.160-05:00"
---

# Thermo / Keytek E502B Telecommunications Surge Simulator Module

_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: Keytek
- Model: E502B
- Condition: Used and in Excellent Condition
- Price: $3,250.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 9 lb, estimated
- Shipping dimensions: 14X10X10 in, estimated

## Categories

- Test Equipment > Electrical Test > EMC Testers (primary)

## Function

Modular surge impulse source for telecommunications testing; generates standardized surge impulses to equipment under test, simulating lightning and surge events on transmission lines. Provides adjustable peak current/voltage, rise/fall times, pulse widths, and impulse sequences for line-to-ground and line-to-line configurations. Includes programmable waveform shapes and external trigger synchronization, with monitoring of output waveforms and fault conditions. Used to evaluate surge protection devices, interface cards, modems, and line interfaces against line disturbances; supports data logging and pass/fail signaling per telecom testing standards.

## Images

- <https://www.artisantg.com/itemimages/thermo_keytek_e502b_view1_2026930142459.jpg>
- <https://www.artisantg.com/itemimages/thermo_keytek_e502b_view2_2026930142459.jpg>
- <https://www.artisantg.com/itemimages/thermo_keytek_e502b_view3_2026930142459.jpg>
- <https://www.artisantg.com/itemimages/thermo_keytek_e502b_view4_2026930142459.jpg>
- <https://www.artisantg.com/itemimages/thermo_keytek_e502b_view5_2026930142459.jpg>
