5V WiFi Single Chanel Relay Wiring !

Thread Starter

spike1947

Joined Feb 4, 2016
84
Hi

I have just purchased a 5V WiFi Single Chanel Relay and want to know what the connectors are for , as in the attached photo .
I know the GND /VCC , and I guess the CK/COM/CB are NC or NO Contacts ! , but not sure what the HC is for .
Cheers
spike
 

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ebeowulf17

Joined Aug 12, 2014
2,942
HC might be host control?

Not sure what it would do in this context, but googling "HC Pin" came up with a number of wireless devices with such a pin name.
 

ebeowulf17

Joined Aug 12, 2014
2,942
No-one denied that it was wireless, only that it was WiFi. It's clearly not WiFi.

As to your original question, I'm guessing you can ignore that extra pin. I have a couple theories as to what it might be for, but if you don't need it, don't worry about it.
 

Thread Starter

spike1947

Joined Feb 4, 2016
84
Thanks guys for all your replies , yes I did confuse the question with the wi-fi bit , I am not that much up on electronics , more a domestic sparky ! .

cheers

spike
 

bertus

Joined Apr 5, 2008
20,049
Hello,

433 MHz is wireless, but not Wifi.
433 MHZ can be used for remote control.
Wifi is used on a much higher frequency and is used with a protocol to exchange data.
Wifi is also bi-directional, as 433 MHz is one way only.

Bertus
 
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