The E5EC-PR4A5M-000 is an Omron temperature controller with relay output. It is a single loop controller with top-mounted keyswitch, heater fault output, and an alarm function. It can be used to control temperatures ranging from -45°C to 150°C. It has a dual 4-digit LED display, four setpoints, and RS485 communications. It supports heating, cooling or combined control. The battery-backed calendar and time clock can be used to schedule up to four daily heating and cooling events.