Gikfun MC-38 Wired Door Sensor Magnetic Switch for Arduino EK1656

Sonoff SV Safe Voltage Wifi Wireless Switch Smart Home Module DC 5-24V Phone APP Control Support Secondary Development for Amazon Alexa Google Nest Geekstory

DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino

Makerfocus D1 Mini NodeMcu 4M Bytes Lua WiFi Development Board Base on ESP8266 ESP-12F N Compatible NodeMcu Arduino

3pcs ESP8266 NodeMcu Lua CP2102 WIFI Internet Development Board Wireless Module works with Arduino IDE/Micropython

2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security

HiLetgo New Version ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WiFi Development Board Open Source Serial Wireless Module Works Great with Arduino IDE/Micropython

Tolako 5v Relay Module for Arduino ARM PIC AVR MCU 5V Indicator Light LED 1 Channel Relay Module Works with Official Arduino Boards

Qunqi 3.3V 5.5V FT232RL FTDI USB to TTL Serial Adapter Module for Arduino Mini Port

Elegoo EL-CP-004 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Wires Ribbon Cables Kit for arduino

HiLetgo 2pcs ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WIFI Development Board Open source Serial Wireless Module Works Great with Arduino IDE/Micropython (Pack of 2PCS)