{"product_id":"viair-90111-pressure-switch-with-relay-12v-auto-on-off-at-110-145-psi","title":"VIAIR 90111 Pressure Switch with Relay – 12V Auto On\/Off at 110–145 PSI","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe VIAIR 90111 Pressure Switch with Relay is a compact, black control device designed for 12V air systems. It automates the on\/off cycling of your air compressor by preset pressures, helping you avoid operating beyond the intended limit while keeping your setup tidy and efficient.\u003c\/p\u003e\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eConfigured to turn the compressor on at 110 PSI and shut it off at 145 PSI, this switch provides a reliable, pre-set cycling range. The built-in relay is designed to carry longer electrical loads, which can reduce wear on external switches and wiring while promoting smoother operation over time.\u003c\/p\u003e\n\u003cp\u003eThe unit connects through a straightforward 1\/8 NPT M port, making it compatible with a variety of fittings and setups. Designed for 12-volt systems, it fits well with many automotive, off-road, and workshop configurations where space and simplicity matter.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic on at 110 PSI, off at 145 PSI to maintain steady pressure\u003c\/li\u003e\n  \u003cli\u003eBuilt-in relay to handle longer loads and potentially extend component life\u003c\/li\u003e\n  \u003cli\u003e12-volt system compatibility for common automotive and mobile setups\u003c\/li\u003e\n  \u003cli\u003eEasy connection via 1\/8 NPT M port\u003c\/li\u003e\n  \u003cli\u003eCompact, low-profile design suitable for tight spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy consider this for your system\u003c\/h3\u003e\n\u003cp\u003eIf you rely on an air compressor for tires, tools, or vehicle upgrades, this switch offers a practical way to automate pressure management. The preset cycling range can help maintain performance without constant manual adjustments, while the built-in relay supports sustained operation under load. Use cases vary from on-board vehicle systems to portable shop setups where a compact control module can make a difference.\u003c\/p\u003e\n\u003ch3\u003ePractical uses\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVehicles with on-board air compressors requiring consistent cycling\u003c\/li\u003e\n  \u003cli\u003ePortable or stationary shop air setups needing a compact control unit\u003c\/li\u003e\n  \u003cli\u003e12V systems that value automatic pressure regulation and reduced manual monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the VIAIR 90111 pressure switch do?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It automatically powers the air compressor on at 110 PSI and off at 145 PSI to prevent over-pressurization.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the installation and system requirements?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Designed for 12-volt systems and connects via a 1\/8 NPT M port, with a built-in relay for longer load handling.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"VIAIR","offers":[{"title":"Default Title","offer_id":42470302187605,"sku":"B000FQ793A","price":51.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/viar-90111-pressure-switch-with-relay.jpg?v=1778128602","url":"https:\/\/plentytorque.co.uk\/products\/viair-90111-pressure-switch-with-relay-12v-auto-on-off-at-110-145-psi","provider":"PlentyTorque","version":"1.0","type":"link"}