Four Key Silver Aluminum Keypad Shell Enclosure (MX Compatible Switches) [Discontinued] Brand_iFixit or any USB power supply

or any USB power supply with 2A output will do)

Configurable Analog or Digital inputs for sensors

and stepper motors work great

Send notifications when someone is at your doorstep

Note that despite using Ethernet cable

Four Key Silver Aluminum Keypad Shell Enclosure (MX Compatible Switches) [Discontinued] Brand_iFixit or any USB power supplyFor all the DIY keebfans in the house here is a super sleek and sturdy 4 Key Aluminum Keypad Shell in Silver, the perfect base to begin your custom keypad project. You provide the PCB in the housing and bolt it into this base. Makes for a prettier build with more protection than just layers of PCB or acrylic. While it's designed for a custom PCB, you could also just snap in 4 keys and 'free wire' them. Comes with one anodized silver aluminum enclosure