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JOHNSON CONTROLS W42AA-1C Surface Mount Humidistat - Humidifier & Dehumidifier Controls
JOHNSON CONTROLSHumidifier & Dehumidifier Controls

JOHNSON CONTROLS W42AA-1C Surface Mount Humidistat

The JOHNSON CONTROLS Humidistat (MPN W42AA-1C) is a surface-mount humidifier and dehumidifier control. It operates on an input voltage of 120/240V AC and does not include an outdoor temperature sensor.

SKU 3G-OTH-67470

Also listed as: W42AA1C · W42AA 1C

Brand
JOHNSON CONTROLS
Item
W42AA-1C Surface Mount Humidistat
Part Number
W42AA-1C
Category
Humidifier & Dehumidifier Controls
Available to Order
Also known as:W42AA-1CJOHNSON CONTROLS
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
W42AA-1C
Type
Dehumidifier Control Compatible / Humidifier Control Compatible
Product Type
Humidistat
Input Voltage
120/240V AC
Mounting Location
Surface Mount
Outdoor Temperature Sensor
No

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

Product Description

The JOHNSON CONTROLS Humidistat (MPN W42AA-1C) is a surface-mount humidifier and dehumidifier control. It operates on an input voltage of 120/240V AC and does not include an outdoor temperature sensor.

Frequently Asked Questions

What is the JOHNSON CONTROLS W42AA-1C humidistat used for?

The JOHNSON CONTROLS W42AA-1C is a surface-mount humidistat used to control humidifiers and dehumidifiers in commercial or industrial HVAC systems. It helps maintain desired humidity levels by switching equipment on or off based on the sensed relative humidity.

What are the specifications of the JOHNSON CONTROLS W42AA-1C humidistat?

The JOHNSON CONTROLS W42AA-1C is a surface-mount humidistat with an input voltage of 120/240V AC. It is compatible with both humidifier and dehumidifier controls and does not include an outdoor temperature sensor. The manufacturer part number is W42AA-1C.

Where to buy the JOHNSON CONTROLS W42AA-1C humidistat worldwide?

You can source the JOHNSON CONTROLS W42AA-1C humidistat through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install a JOHNSON CONTROLS W42AA-1C surface-mount humidistat?

Mount the JOHNSON CONTROLS W42AA-1C on a wall or vertical surface in the controlled space, away from drafts and heat sources. Connect the 120/240V AC supply per the wiring diagram. Set the humidity setpoint as needed. Always follow local electrical codes and the manufacturer's instructions.

Used in

Common applications for JOHNSON CONTROLS
Building automation systems — Johnson Controls TE-6361M-1 duct temperature sensor for monitoring duct temperatures in HVAC systems.
Refrigeration systems — Johnson Controls SEC99AA-24C armored capillary tubing for connecting pressure controls.
HVAC differential pressure control — Johnson Controls P74EA-8C for controlling equipment based on pressure changes.
Liquid flow detection — Johnson Controls F261MAH-V01C paddle flow switch for piping systems.
Hydronic heating and cooling — Johnson Controls VG2431YN globe valve for flow control in water systems.
Refrigeration condensing units — Johnson Controls P66AAB-1C fan speed control for maintaining pressure.
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JOHNSON CONTROLS Products

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

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