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JOHNSON CONTROLS Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital - Single-Stage Electronic Temperature Controls
JOHNSON CONTROLSSingle-Stage Electronic Temperature Controls

JOHNSON CONTROLS Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital

The JOHNSON CONTROLS A421ABG-02C is a single-stage electronic temperature control for heating applications. It operates with a 240V AC input voltage and is compatible with the A99 series. The digital control features…

SKU 3G-OTH-68468

Also listed as: A421ABG02C · A421ABG 02C

Brand
JOHNSON CONTROLS
Item
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital
Category
Single-Stage Electronic Temperature Controls
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
A421ABG-02C
Type
Heat and Cool, -40°F to 212°F, Digital, 1, SPDT
AC/240V AC
120V
Application
Heating Control
Product Type
Temperature Control
Input Voltage
240V AC
Compatible with Series
A99
Variable Output Voltage
No

Technical Documents

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JOHNSON CONTROLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The JOHNSON CONTROLS A421ABG-02C is a single-stage electronic temperature control for heating applications. It operates with a 240V AC input voltage and is compatible with the A99 series. The digital control features a single SPDT output and a temperature range of -40°F to 212°F.

Frequently Asked Questions

What is the JOHNSON CONTROLS A421ABG-02C temperature control used for?

The JOHNSON CONTROLS A421ABG-02C is a single-stage electronic temperature control for heating applications. It provides precise digital control with a single SPDT output, operating across a -40°F to 212°F range. It is compatible with the A99 series sensors and accepts 240V AC input.

What are the specifications of the JOHNSON CONTROLS A421ABG-02C?

The JOHNSON CONTROLS A421ABG-02C is a digital single-stage temperature control with SPDT output. It operates at 120V AC/240V AC input voltage, covers a -40°F to 212°F range, and is designed for heating control. It is compatible with the A99 series and has no variable output voltage.

Where to buy the JOHNSON CONTROLS A421ABG-02C worldwide?

3G Electric supplies the JOHNSON CONTROLS A421ABG-02C temperature control to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this single-stage electronic control.

How to install the JOHNSON CONTROLS A421ABG-02C temperature control?

Install the JOHNSON CONTROLS A421ABG-02C by mounting it in a dry location, wiring the 240V AC input and SPDT output per the wiring diagram, and connecting a compatible A99 series sensor. Follow standard electrical safety practices and verify the setpoint range of -40°F to 212°F before commissioning.

Used in

Common applications for JOHNSON CONTROLS
Industrial refrigeration — Johnson Controls P170SA-1C dual pressure control for compressor protection in ammonia or halocarbon systems
Chiller plant automation — Johnson Controls VA7810-HGA-2 electric globe valve actuator for modulating chilled water flow in VG7000 series valves
Pneumatic HVAC retrofit — Johnson Controls T-4002-302 conversion kit for upgrading existing Robertshaw thermostats in commercial buildings
Cooling tower water management — Johnson Controls V-4332-1007 pneumatically actuated diaphragm valve for 3-way diverting of water flow
Boiler fuel oil pressure monitoring — Johnson Controls P545NCB-25C electronic lube oil pressure control with alarm for burner management systems
Process pressure sensing — Johnson Controls P599AAPS105C pressure transmitter with IP67 rating for washdown zones in food and beverage plants

JOHNSON CONTROLS Products

3G Electric supplies JOHNSON CONTROLS single-stage electronic temperature controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Cross-referenced by specification & description
Temperature Control: Single Stages, Cool Only, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABT-02C)
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Temperature Control: Single Stages, Cool Only, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABT-02C)
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABD-02C)
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Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABD-02C)
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 24V AC, A99 (MPN A421GBF-02C)
JOHNSON CONTROLS
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 24V AC, A99 (MPN A421GBF-02C)
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABC-03C)
JOHNSON CONTROLS
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABC-03C)
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 4X, SPDT, A99 (MPN A421AEC-01C)
JOHNSON CONTROLS
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 4X, SPDT, A99 (MPN A421AEC-01C)
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 4X, SPDT, 24V AC, A99 (MPN A421GEF-02C)
JOHNSON CONTROLS
Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 4X, SPDT, 24V AC, A99 (MPN A421GEF-02C)

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Temperature Control: Single Stages, Heat and Cool, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABC-02C)
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Temperature Control: Single Stages, Heat or Cool, -40°F to 212°F, Digital, 1, SPDT, 120V AC/240V AC (MPN A421ABC-02)
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