Description
The Johnson Controls W43A-14 is a reliable, line-voltage humidistat engineered for precise humidity sensing and control in commercial and residential HVAC applications. Designed to operate across a wide voltage range, it integrates easily into a variety of electrical systems without the need for additional transformers or step-down components.
Key Features
- Wide voltage compatibility — operates at 120, 208, or 240 Vac for flexible system integration
- 0 to 70% relative humidity (RH) sensing range for broad application coverage
- SPDT (Single-Pole, Double-Throw) switching action enables both humidification and dehumidification control in a single device
- Supports vertical or horizontal mounting for versatile installation in walls, ducts, or enclosures
- Durable construction from Johnson Controls — a trusted name in building controls and HVAC automation
Specifications
- Brand: Johnson Controls
- Model / SKU: W43A-14
- Voltage: 120 / 208 / 240 Vac
- Humidity Range: 0 to 70% RH
- Switch Action: SPDT
- Mounting Orientation: Vertical or Horizontal
Application
The W43A-14 is ideal for use in HVAC systems where maintaining proper indoor humidity levels is critical — including commercial buildings, schools, hospitals, and industrial facilities. Its SPDT switching action allows it to control humidifiers, dehumidifiers, or ventilation equipment depending on system configuration. The multi-voltage design simplifies retrofits and new installations alike.
