Line-Voltage Type 4X Electronic Temperature Control: Type 4X (NEMA), IP66 watertight enclosure
for surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-200C temperature sensor
with 6.6 ft (2.0 m) cable.
The A421 Series controls are single stage, electronic
temperature controls with a single-pole, double-throw
(SPDT) output relay. The controls feature an adjustable
backlit LCD for viewing the temperature and status of
other functions, and a three-button touchpad for setup
and adjustment. An LED indicates the On/Off status of
the output relay.
The A421 controls are available in low voltage 24 VAC
and high voltage 120 or 240 VAC models, which
provide options for most refrigeration and HVAC
applications.
The A421 controls provide heating or cooling control,
sensor offset, temperature setback, adjustable
anti-short cycle delay, and a restricted user adjustment
mode. The temperature units can be displayed in °F or
°C. The temperature adjustment range is -40 to 212°F
or -40 to 100°C.
The A421 controls are available in Type 1/IP20
high-impact plastic enclosures suitable for surface or
DIN rail mounting and Type 4X/IP66 watertight,
corrosion-resistant surface mount enclosures.
Some A421 Series control models are equipped with
factory-installed power cords. The power cords provide
convenient plug-in connection and control of 120 VAC
heating and cooling equipment
Received recently, not yet installed, but tested it with a kettle of hot water and an independent thermometer and it performed exactly as advertized. Programming it for basic functionality was quite easy too.
Only reason 4 and not 5 stars is I still don't know how long it will last.
Mike
Vermont
2 years ago
Verified Buyer
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Quick and professional
Item arrived exactly as expected, when promised.
ShimmyBrau
Chicago
4 years ago
Verified Buyer
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Not about the product, about the company
I bought it and decided to use another product and returned it. Supply House was fantastic, the return process was super easy, would order from them again, no problem.
Product looks good. I didn't use it but it looks well put together.
chris
VA
7 years ago
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