this adapter can be powered either by relay or by separated in switch. so if relay not work switch can do the job.

when switching both the relay and switch I noticed that relay contacts shut and not return back again when switch off relay. the COM and NO remain contacted.

do I have to apply a diode to prevent current flow on NO after closing relay.

I have included the wiring of the circuit.
thanks in advance for help.!

I have one purpose to connect Omega2 with the hotspot of NodeMCU.

I'm trying the traditional way in Omega2, like using "wifisetup", search and connect.
In NodeMCU I have configure static IP (10.0.1.1) subnet (255.255.255.0).

Whereas Omega2 is able to search hotspot of NodeMCU and able to connect it, but as soon as I checked in Omega2 "ifconfig", I din't see any connection between Omega2 and NodeMCU.
Also I tried to "ping 10.0.1.1", but it doesn't worked.

So just to check wifimanager of omega2 is working or not, I have tried to connect with router and its work pretty well.
Also to test wifimanager of NodeMCU is working or not, I have tried connecting with my PC and it also works pretty well and I able to do the right stuff with this.

In Omega2, on command "wifimanager -v" gives below output:
AutoConnectAP1: access point of NoceMCU
.-------------------------------------------------------------------------------
Current Count: 6
Number of configured nets: 6
trying to connect to... "AutoConnectAP1"
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
wwan network is set up... false,
ran out of configured networks... no station available
.-------------------------------------------------------------------------------
Please suggest me what to do to make it work.

Thanks