Ensure before any electrical work commences to turn OFF mains supply
Please wire the as per diagram below
Output from iotty switch for 1 gang is from L1 to pin 3 on module
Output from module to lamp is from pin 7
Ensure you do not forget to link from L on the iotty switch to R input
Once you have wired the switches, screw iotty switches back into the wall, power back on, then pair switch with your WiFi.
Within the device setup, change the type from Light to Toggle, this shall make the switch into pulse mode
To turn on dimmer tap once, to turn off tap once, to dim up and down press and hold till the desired dimming level is set, release finger.