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Johnson Controls Refrigerator / Freezer Thermostat (A421 Digital Temperature Controller)

Johnson Controls Refrigerator / Freezer Thermostat (A421 Digital Temperature Controller)

Item Number:24-5004
AVERAGE RATING
review
5
0
5
Your Price:$83.99
Reward Points 84 points will be rewarded to you when you buy this item.

Digital Refrigerator Thermostat 
Johnson Controls A421
The A421 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. A Light-Emitting Diode (LED) indicates the controls output relay On/Off status.
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.
5 Stars
GREAT PRODUCT
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.
Reviewed by:  on 10/16/2017
5/5
5 Stars
Great product
Works flawless & very easy to program. Would recommend this product for hot or cold applications.
Reviewed by:  on 7/23/2017
5/5
5 Stars
Recommended
Slightly different compared to the A419, but in a better way.
Reviewed by:  on 5/5/2017
5/5
5 Stars
Johnson Controls Refrigerator/Freezer Thermostat
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.
Reviewed by:  on 3/3/2015
5/5
5 Stars
Easy Temp. Contol in <5min.
Very easy to setup. It will take you maybe 5 minutes TOTAL to read the manual, install the unit, set the desired temperature. I used heavy duty Velcro to mount this to my deep freezer. Wonderful addition with no hassle of doing the wiring myself (which is not a big deal if you have the wires available). Will buy another if I make another expansion.
Reviewed by:  on 5/9/2014
5/5
5 Stars
Much Better Control
The combination of the carboy heater wrap, thermostat control and thermowell stopper allows me to ferment at a constant temperature. I have much better control over the fermentation process and I think that makes a better beer. I''m quite happy. Cheers!
Reviewed by:  on 5/8/2013
5/5
5 Stars
Fantastic Product
The 4003 Johnson Controls Thermostat is great! It saved me a ton of money by changing my unused deep freezer into a refrigerator. The interface is easy to use. The temperature control is extremely accurate. Fantastic product!
Reviewed by:  on 9/21/2012
5/5

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