Remote Control Systems, Touchpanels

Crestron
https://www.crestron.com/
Connects to M1 via:
M1XEP Ethernet Interface, C1M1 Dual-Path Communicator, or Main Serial (RS232) Port
Resources:
ELK-M1XEP Manual
ELK-C1M1 Setup Addendum
Tech Note - Proper Procedures for Connecting/Disconnecting Third-Party Equipment to M1 RS232 Serial
ELK Security Driver for CrestronHome available from Digital Automation. Learn more at https://digitalautomation.us/product/elk-security-crestron-home/