# Shelly 120A TC

**Brand:** Shelly
**Category:** Bricolage & jardin
**Code (GTIN/SKU):** 3809511202135
**Canonical URL:** https://openreviews.io/en/reviews/shelly/shelly-120a-tc-3809511202135

## Rating: 4.6/5 ★★★★★ — 11 reviews analyzed
_Confidence: high_

## At a glance

Shelly 120A TC reviews: 4.6/5 based on 11 analyzed reviews from 2 sites, updated November 2, 2026.

Praised: measurement accuracy and transformer utility. Criticized: average extension module.

11 reviews analyzed, all published on other sites.
Other sites: 2 sources, 11 reviews, average rating 4.6/5.
How we count reviews: https://openreviews.io/en/methodology

## AI summary

This 120A current transformer is designed as an extension module for measuring electrical current within an energy monitoring ecosystem. Feedback is particularly praiseful regarding its measurement performance, utility, and overall integration. However, some users temper their enthusiasm by pointing out that the overall appreciation of the extension module itself remains more average.

## Strengths

- **Measurement accuracy** — Feedback highlights excellent performance for measuring electrical current.
- **Transformer utility** — The use of this 120A clamp gives complete satisfaction for energy monitoring.

## Weaknesses

- **Average extension module** — The associated add-on module receives more mixed overall ratings from users.

## Frequently asked questions

- Is this transformer easy to install?
- Is the measurement accuracy at 120A reliable?
- Is it compatible with all Shelly modules?
- What is the build quality of the clamp?

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_Source: OpenReviews — https://openreviews.io/en/reviews/shelly/shelly-120a-tc-3809511202135_