Teensy  There are 16 products.

SparkFun Logic Level Converter -...

BOB-12009

2-Channel 5V Relay Module

5V Relay Module for Arduino, Raspberry Pi and other 5v compatible circuits and microcontrollers. 

Teensy 3.5: DEV-14055

Magnetic Door Sensor set for home alarm...

Wired Door/Window Magnetic Switch set - Normally open

5A SSR Breakout

Looking to control lights and bulbs with microcontroller ? then, this digital AC switch boards is suitable for your application, this board is a great alternative for the solid state relay boards. This board comes pre-assembled with everything, all you need to do is to connect supply, load and digital interface pins