Panel fit and what the controller handles
The Omron E5EC-TQR4A5M-019 is a process temperature controller from the E5EC series, packaged in bulk for panel builds. It carries a relay output, a transistor output, and an event input set — the description reads "VOLT RLLY HB TRANS 6EVENT AC" which points to a voltage/heater-burnout alarm relay plus transistor and six-event AC input. That means it handles both on-off and alarm signalling for a heater loop, with the transistor output driving a solid-state relay directly.