Quantity   Component name
1 × ESP8266(NodeMCU)
3 × 4N35 Opto and Fiber Optic Semiconductors and ICs / Optocouplers and Optoisolators
4 × 1N4148 Discrete Semiconductors / Diodes and Rectifiers
1 × HLK-PM01 Mains to 5v dc conversion module
1 × IRF740 Discrete Semiconductors / Power Transistors and MOSFETs
1 × Fuse 2A
1 × SH22 Type Fuse Holder
3 × Resistor 33K ½ W
2 × Resistor 10K ⅛ W
1 × Resistor 500 ⅛ W
2 × Zener Diodes(12 V)
3 × 6 pin IC Holders For 4N35
2 × Incandescent Bulbs
1 × Plastic Switch-box