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
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.