Buy a Advanced Network Devices Call Button Kit - communication module or other Phone Accessories at
Touch Buttons
Modular, web-enabled, industrial I/O controller that allows you to add various combinations of I/O to tailor it to your specific application.
X-400™ | Web Enabled I/O Controller
Advanced Network Devices Products
Infineon Based Modules, Wi-Fi® Modules / Wi-Fi® + Bluetooth® Modules
Documentation - Intercom Gen. 1
Arduino Explore IoT Kit — Arduino Online Shop
X10 (industry standard) - Wikipedia
RASynBoard Avnet Boards
BOOSTXL-CC2650MA Evaluation board