# Driving Sonoff 4CH pro 433MHz?

**URL:** <https://community.homey.app/t/driving-sonoff-4ch-pro-433mhz/4785>\
**Category:** Devices\
**Created:** [December 2, 2018, 10:39am UTC](https://community.homey.app/t/driving-sonoff-4ch-pro-433mhz/4785 "2018-12-02T10:39:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PEAR7777](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/pear7777/32/12956_2.png) [@PEAR7777](https://community.homey.app/u/PEAR7777)\
**Post date:** [December 2, 2018, 10:39am UTC](https://community.homey.app/t/driving-sonoff-4ch-pro-433mhz/4785/1 "2018-12-02T10:39:45Z")

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My Homey looses WIFI connection now and then,  
Fix is to reset the Homey by powercycling it.

My idea is to connect the Homey-mains to a channel of the Sonoff 4CHPRO, which has changeover switches, to the default “on” connection.  
The 4CH I will supply itself with this channel as well.

So, If I “switch” said channel, the 4CH and Homey will switch off, setting the channel to “default” (on) again, powercycling itself and the Homey, thus resetting Homey

I saw the following problems:

1. Detect WIFI disconnect can be triggered if a device has not reported for some time, since they communicate through WIFI, that could be the trick  
So I can switch the 4Ch channel.

2. drive the Sonoff 4CH pro. This is the question: the 4CH is connected through MQTT, which is WIFI… but the 4CH pro has 433.

Question:  
How to drive the 4CH with 433 MHz?

Tia.

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<div class="post-metadata">

**Author:** ![PEAR7777](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/pear7777/32/12956_2.png) [@PEAR7777](https://community.homey.app/u/PEAR7777)\
**Post date:** [December 3, 2018, 8:14pm UTC](https://community.homey.app/t/driving-sonoff-4ch-pro-433mhz/4785/3 "2018-12-03T20:14:22Z")

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Yes, I have a reservation in the DHCP for Homey.

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**Author:** ![Slof](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/slof/32/1318_2.png) [@Slof](https://community.homey.app/u/Slof)\
**Post date:** [December 3, 2018, 9:10pm UTC](https://community.homey.app/t/driving-sonoff-4ch-pro-433mhz/4785/4 "2018-12-03T21:10:05Z")

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Use Homeyduino, then you van make a Watchdog very easy!  
I’m also use that for some pumps of my CV who needs to run if a signal is lost.  
If you detect a lost of homey just switch the output off, wait X-seconds and then on again.