Description
Product Overview
The YSD Pressure Switch is engineered for precise air pressure management in industrial and marine settings. It automatically engages when pressure drops below 90 PSI and disengages at 120 PSI, offering a tight tolerance of ±5 PSI for consistent performance. The unit features a 1/4‑18 NPT male thread (6 mm diameter) and compact dimensions of 44 × 26 × 26 mm, making it easy to install in tight spaces. Designed for both AC (110 V/120 V/240 V) and DC (12 V/24 V) power sources, it supports up to 20 A of current, ensuring compatibility with a wide range of equipment. Built to endure 100 000 activation cycles, this switch delivers long‑term reliability for air horns, train horns, compressors, marine horns, and oil tank pressure systems.
![[Product front view showing all components]](https://www.ruralgoods.store/wp-content/uploads/2026/06/f9e6b052b9074c3c87a261bd2112e273.jpg)
Usage
This pressure switch excels in environments where precise pressure control is critical. Install it on air horn systems to automatically sound alerts when pressure falls below safe levels, or integrate it with compressors to prevent over‑pressurization. Marine operators rely on its robust construction to manage hull pressure, while oil facilities use it to monitor tank conditions, reducing the risk of leaks. Its versatile voltage support allows use in both portable battery‑powered tools and fixed industrial installations, catering to technicians, engineers, and DIY enthusiasts alike.
Why Choose Us
Choosing the YSD Pressure Switch means investing in a product backed by rigorous testing and a reputation for durability. Each unit undergoes a 100 000‑cycle life test, ensuring it can withstand the demanding cycles of industrial operations. Our manufacturing process adheres to strict quality standards, and we provide responsive customer support for installation guidance and troubleshooting. With a proven track record reflected in a 4.8‑star rating from 22 verified buyers, you can trust this switch to deliver consistent performance when it matters most.
Key Features
- Auto‑ON below 90 PSI and Auto‑OFF at 120 PSI for precise pressure control
- Universal 1/4‑18 NPT male thread fits most industrial fittings
- Supports AC 110‑240 V and DC 12‑24 V up to 20 A for versatile power options
- Durable design rated for 100 000 activation cycles, reducing replacement costs
- Responsive after‑sales service with expert technical assistance
FAQ
What voltage can the switch operate on?
The switch works with AC voltages of 110 V, 120 V, or 240 V and DC voltages of 12 V or 24 V, making it suitable for a wide range of equipment.
How many cycles can the switch handle?
It is rated for up to 100 000 on/off cycles, providing long‑term reliability in heavy‑duty applications.
Is the switch compatible with marine horn systems?
Yes, the 1/4‑18 NPT thread and robust construction make it ideal for marine horn installations and other water‑exposed environments.
Can I use this switch with a 12 V battery‑powered compressor?
Absolutely, the switch supports DC 12 V operation and can handle up to 20 A of current, perfect for portable compressors.
What is the tolerance on the pressure settings?
The switch activates at pressures below 90 PSI and deactivates at 120 PSI, with a tolerance of ±5 PSI for reliable performance.




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