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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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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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
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
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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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