---
title: "Operational temperature"
url: "https://maker.wiznet.io/forum/13390"
markdown_url: "https://maker.wiznet.io/forum/13390/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "ExtSol"
created: "2019-07-14T19:38:34+09:00"
last_activity: "2019-07-15T01:56:53+09:00"
language: "en"
views: 490
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Operational temperature

## Question

Asked by ExtSol on 2019-07-14 in Serial-to-Ethernet & ConfigTool.

Hi,

I bought WIZ107SR module. After power on, no actions or communications, with disconnected ethernet cable, i think the operational temperature too high. I measured 55C° with my MX-25 304 multimeter.

Is it normally?

## Replies

### Reply 1 by scott, 2019-07-15

Dear ExtSol

Yes, WIZ750SR is a product with a lot of heat.

When the power is connected, the temperature increases by more than 50 ° C.

It is normally.

Soctt

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Source: https://maker.wiznet.io/forum/13390