LC Technology 12V 4 Channel Relay Board
Model reference: LC-ESP01-4R-12V
LC Technology 12V 4 Channel

Available from:


Install method:
USB to Serial

GPIO #Component
GPIO00 Relay1
GPIO01 None
GPIO02 Relay2
GPIO03 None
GPIO04 Relay3
GPIO05 Relay4
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 None
GPIO14 None
GPIO15 None
GPIO16 None
Configuration (old version)
{"NAME":"LC Technology 4CH Relay","GPIO":[21,0,22,0,23,24,0,0,0,0,0,0,0],"FLAG":0,"BASE":18}

With Nuvoton N76E003AT20 microcontroller

You need to configure these rules to control the relays. The ones defined in the template are just virtual relays!

on System#Boot do Baudrate 115200 endon
on SerialReceived#Data=41542B5253540D0A do SerialSend5 5749464920434f4e4e45435445440a5749464920474f542049500a41542b4349504d55583d310a41542b4349505345525645523d312c383038300a41542b43495053544f3d333630 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

Make sure to enable the rule: rule1 1