1. Sfera Labs is shipping expandable industrial controllers built around the Raspberry Pi Compute Module 4; 2. The controllers come with up to 8GB RAM, 32GB eMMC memory, and an optional M.2 PCIe SSD; 3. The units feature Wi-Fi, Bluetooth LE, dual Ethernet ports, dual USB ports, and an isolated RS-485 port, with options for additional security and expansion modules.