# Utilsation switch
**URL:** https://discourse.nodered.org/t/utilsation-switch/39217
**Category:** Developing Nodes
**Created:** [16 January 2021 03:05 UTC](https://discourse.nodered.org/t/utilsation-switch/39217 "2021-01-16T03:05:26Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@yan](https://discourse.nodered.org/u/yan)
#### Post date: [16 January 2021 03:05 UTC](https://discourse.nodered.org/t/utilsation-switch/39217/1 "2021-01-16T03:05:27Z")
Bonjour.
je souhait utilisee la fonction "Switch" pour mettre en route des relais.
hors j'active 0 bien les relais mais je voudrais que quand la variable ne plus la bonne revenir a le etat 1
comment faire ?
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### Author:  [@yoiang](https://discourse.nodered.org/u/yoiang)
#### Post date: [17 January 2021 04:56 UTC](https://discourse.nodered.org/t/utilsation-switch/39217/2 "2021-01-17T04:56:37Z")
Bonjour @yan!
I apologize, my French is terrible. How is your English?
To clarify, do you want:
1. Specific `msg.payload` value triggers a relay to be activated
2. Same `msg.payload` value keeps relay activated
3. Different `msg.payload` value deactivates relay
Or do you want:
1. Specific `msg.payload` value triggers a relay to be activated
2. Variable monitored
a. If variable is same as original `msg.payload` value relay remains activated
b. If variable is different from original `msg.payload` relay is deactivated
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [18 March 2021 04:56 UTC](https://discourse.nodered.org/t/utilsation-switch/39217/3 "2021-03-18T04:56:49Z")
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