Technical specifications
Table 4: A421 Series Electronic Temperature
Control Technical Specifications
Specification
Description
Power
consumption
1.8 VA maximum
Supply power
Class 2: 108/110/115/120 or 208/230/240
VAC, 50/60 Hz
Type 1/IP20:
Operating: -40°F to 150°F (-40°C to 66°C), 0%
to 95% RH noncondensing
Shipping and storage: -40°F to 185°F (-40°C
to 85°C), 0% to 95% RH noncondensing
Ambient
conditions
Type 4X/IP66:
Operating: -40°F to 140°F (-40°C to 60°C)
Shipping and storage: -40°F to 140°F (-40°C
to 60°C)
Temperature
control range
-40°F to 212°F or (-40°C to 100°C)
Sensor type
A99 PTC temperature sensor, 1,035 ohm at
77°F (25°C)
Sensor offset
range
±5ºF or ±3ºC
Enclosure material Type 1: IP20 high-impact thermoplastic or
Type 4X: IP66 watertight, corrosion-resistant,
high-impact thermoplastic
Compliance
North America:
cULus Listed; UL 60730, File
E27734, Vol. 1; FCC Compliant to CFR47, Part
15, Subpart B, Class B Industry Canada (IC)
Compliant to Canadian ICES-003, Class B
limits
Europe:
CE Mark – Johnson Controls declares
that this product is in compliance with the
essential requirements and other relevant
provisions of the EMC Directive; Low Voltage
Directive.
Australia:
Regulatory Compliant Mark (RCM)
The performance specifications are nominal
and conform to acceptable industry standards.
For application at conditions beyond these
specifications Johnson Controls shall not be liable
for damages resulting from misapplication or
misuse of its products.
Product warranty
This product is covered by a limited
warranty, details of which can be found at
www.johnsoncontrols.com/buildingswarranty.
Software terms
Use of the software that is in (or constitutes)
this product, or access to the cloud, or hosted
services applicable to this product, if any,
is subject to applicable terms set forth at
www.johnsoncontrols.com/techterms.
Your use
of this product constitutes an agreement to such
terms.
Single point of contact
APAC
Europe
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MANAGEMENT
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JOHNSON CONTROLS
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MILWAUKEE WI 53202
USA
Contact information
Contact your local branch office:
www.johnsoncontrols.com/locations
Contact Johnson Controls:
www.johnsoncontrols.com/contact-us
© 2020 Johnson Controls. All rights reserved. All specifications and other information shown were
current as of document revision and are subject to change without notice.
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