| Part | Value | Device | Package | Description | |
| JP1 | 2828XX-2282837-2 | 2828XX-2282837-2 | TERMBLK_508-2N | 2 Position Wire to Board Terminal Block Horizontal with Board | |
| JP2 | PINHD-1X3 | PINHD-1X3 | 1X03 | PIN HEADER | |
| JP3 | PINHD-1X10 | PINHD-1X10 | 1X10 | PIN HEADER | |
| JP4 | PINHD-1X10 | PINHD-1X10 | 1X10 | PIN HEADER | |
| R1 | 10k | R-EU_0207/7 | 0207/7 | RESISTOR, European symbol | |
| R2 | 10K | R-EU_0207/7 | 0207/7 | RESISTOR, European symbol | |
| R3 | 10K | R-EU_0207/7 | 0207/7 | RESISTOR, European symbol | |
| U1 | D1 mini | WEMOS-D1-MINI | WEMOS-D1-MINI | WeMos.cc | |
| U2 | ESP01 | ESP01 | ESP01 | ESP8266 Wifi module 01 | |
| U3 | MCP23017 | MCP23017SP | DIL28-3 | http://ww1.microchip.com/downloads/en/DeviceDoc/21952a.pdf | |
| U4 | AMS1117 | REG-AMS1117-3P-3.3V#V | REG-AMS1117-3P#V | Linear Regulator based on AMS1117 chip | |
| U5 | HLK-PM013W | HLK-PM013W | HLK-PM01 | Hi-Link Power Supply | |