The A421 controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset function. The setpoint range is -30 to 212F (-34 to 100C). The controls feature remote sensing capability and interchangeable sensors. The A99 temperature probe is 2" long and 1/4" diameter.
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This is a great product to build your keezer or kegorator. No problem getting set up and very accurate. My kegs, in a keezer, stay a wonderful 38 degrees.
Fast shipping works flawless and very easy to set up. Have mine attached to the side of refrigerator with heavy duty Velcro. Would definitely recommend this item as well as Homebrewing.org. OUTSTANDING. Thank you.
Works flawless & very easy to program. Would recommend this product for hot or cold applications.
Slightly different compared to the A419, but in a better way.
Bought one about a year ago for my keezer and love it. Recently purchased a Kegerator and wanted more accurate control of temperature. Got it on sale and it was shipped promptly. Very happy with the product and the service.