2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board

2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board

HiLetgo ESP-WROOM-32 ESP32 ESP-32S Development Board 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller Processor Integrated with Antenna RF AMP Filter AP STA for Arduino IDE

Otdorpatio Junction Box, Hinged Cover IP67 Waterproof ABS Project Box with 2 NPT 1/2" Cable Gland, Electrical Box Enclosure with Mounting Plate & Wall Bracket 8.7 x 6.7 x 4.3inch(220x170x110mm)