https://tasmota.github.io/docs/devices/LC-Technology-WiFi-Relay/#lc-technology-wifi-relay-quad-relay-note-older-versions-of-this-board-used-a-baud-rate-of-9600-so-if-115200-doesnt-work-try-9600

(note, older versions of this board used a baud rate of 9600, so if 115200 doesn't work, try 9600)~

Note: The template provided below did not work on an ESP-01 running Tasmota 8.1.0. It was necessary to manually enter the template in the Configure Template menu.

    In configuration open Configure Other paste this template and select activate

{"NAME":"LC Technology 4CH Relay","GPIO":[52,255,17,255,255,255,255,255,21,22,23,24,255],"FLAG":0,"BASE":18}

    Open Configure Module and set GPIO0, GPIO2, GPIO4 and GPIO5 as Relay1, Relay2, Relay3 and Relay4. Click Save.
    Disable SerialLog (type seriallog 0 in the Tasmota console)

Enter this command in console (configure the 1st rule)

Rule1
 on System#Boot do Backlog Baudrate 9600; SerialSend5 0 endon
 on Power1#State=1 do SerialSend5 A00101A2 endon
 on Power1#State=0 do SerialSend5 A00100A1 endon
 on Power2#State=1 do SerialSend5 A00201A3 endon
 on Power2#State=0 do SerialSend5 A00200A2 endon
 on Power3#State=1 do SerialSend5 A00301A4 endon
 on Power3#State=0 do SerialSend5 A00300A3 endon
 on Power4#State=1 do SerialSend5 A00401A5 endon
 on Power4#State=0 do SerialSend5 A00400A4 endon

Enable the rule (type rule1 1 in the Tasmota console)