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The Johnson Controls A421AED-01C Penn Series A421 is a line-voltage type 4X electronic temperature control designed for industrial environments. This model includes an IP67 weathertight enclosure and a temperature sensor featuring a 9-7/8 inch cable.
This electronic temperature control is equipped with a bright backlit LCD, adjustable temperature set points, and a compact design for easy installation. It is suitable for heating and cooling applications, featuring basic and advanced programming menus for easy setup.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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