--- product_id: 224017392 title: "Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread" brand: "yanmis" price: "1218824₫" currency: VND in_stock: true reviews_count: 5 url: https://www.desertcart.vn/products/224017392-low-oil-pressure-alarm-low-oil-pressure-switch-three-wire store_origin: VN region: Vietnam --- # 0.08±0.02Mpa alarm pressure 3-wire output -25°C to +100°C range Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread **Brand:** yanmis **Price:** 1218824₫ **Availability:** ✅ In Stock ## Summary > 🔔 Stay Alert, Stay Safe! ## Quick Answers - **What is this?** Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread by yanmis - **How much does it cost?** 1218824₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/224017392-low-oil-pressure-alarm-low-oil-pressure-switch-three-wire) ## Best For - yanmis enthusiasts ## Why This Product - Trusted yanmis brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Responsive Support:** 24-hour customer service for all your inquiries. - • **Robust Reliability:** Designed to withstand extreme temperatures and conditions. - • **User-Friendly Design:** Normally closed/open options for flexible installation. - • **Precision Performance:** Fine-tune your oil pressure alarm for optimal safety. - • **Versatile Compatibility:** Ideal for imported generator equipment and easy replacements. ## Overview The Low Oil Pressure Alarm Switch 309-0641-03 is a high-performance, three-wire oil pressure switch designed for superior reliability in various applications, particularly in imported generator equipment. With a fine-tunable alarm pressure of 0.08±0.02Mpa and a wide operating voltage range of 6-24V, it ensures optimal performance in extreme temperatures from -25°C to +100°C. This switch is perfect for replacing old or malfunctioning units, providing peace of mind with its robust design and responsive customer support. ## Description Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread ## Features - ★【Premium Function】- Oil pressure alarm switch is used with VDO, alarm pressure can be fine-tuned. - ★【Application】- The pressure alarm switch mainly used in some imported generator equipment, the product quality is superior. It is also a replacement for the broken or old one. - ★【Type】- High performance and reliability, three-wire output, housing is not grounded, analog quantity. Normally closed / normally open, closed N-C-0 open. - ★【Product Parameters】- Alarm pressure: 0. 08±0.02Mpa ; Working voltage: 6~24V ; Ambient temperature: -25°C~ +100°C ; Interface thread: 1 / 8-27 NPT. - ★【Serive】- If you are looking for top quality pressure switch, this pressure switch is just what you need. You can us directly if you have any problems and we will respond within 24 business hours. ## Product Details - **Operation Mode:** manual - **Operating Voltage:** 24 Volts - **Contact Type:** Normally Closed - **Connector Type:** Threaded - **Brand:** Yanmis - **Terminal:** Threaded - **Circuit Type:** 3-way - **International Protection Rating:** IP54 - **Control Method:** Remote - **Connectivity Protocol:** X-10 ## Images ![Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread - Image 1](https://m.media-amazon.com/images/I/519RXBoB2bL.jpg) ![Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread - Image 2](https://m.media-amazon.com/images/I/616zX7n7ucL.jpg) ![Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread - Image 3](https://m.media-amazon.com/images/I/61EicYCvIzL.jpg) ![Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread - Image 4](https://m.media-amazon.com/images/I/518Jgj8GXKL.jpg) ![Low Oil Pressure Alarm, Low Oil Pressure Switch Three-wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread - Image 5](https://m.media-amazon.com/images/I/61E+dKL3c7L.jpg) ## Questions & Answers **Q: Is this normally open or closed? How do you switch it from one or the other?** A: 1. In the non-working state: NC and C are energized, called normally open; NO and C are not energized, called normally closed. 2. In the working state: NC and C are not energized, called normally closed; when the pressure reaches 0.18mpa, NO and C are energized, called normally open. 3. NC and NO are never energized and disconnected all the time **Q: What is the max pressure rating of the alarm switch?** A: The maximum rated pressure is 0.18mpa. **Q: Is the max oil pressure 26 psi?** A: The maximum rated pressure is 0.18mpa. ## Customer Reviews ### ⭐⭐⭐⭐ 4.0 out of 5 stars Brass strips easily *by J***. on Reviewed in the United States on October 18, 2023* Used this for my electric fuel pump shut off, works great but when your on the lake and the engine dies not so great. After bypassing the safety of using this I found that the screw that is open when no pressure is present was loose and wouldn't hold. I replaced it with a larger screw and all was good again. ### ⭐ 1.0 out of 5 stars JUNK *by P***P on Reviewed in the United States on December 23, 2020* Ordered two of these just in case we would get a bad one. First one lasted about 10 minutes and second one was erratic out of the box. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Works good *by M***Y on Reviewed in the United States on June 8, 2023* All good ## Frequently Bought Together - Low Oil Pressure Alarm, Low Oil Pressure Switch Three-Wire Oil Pressure Alarm Switch 309-0641-03 1/8-27 NPT Thread - 160 PCS Heat Shrink Wire Connectors, 22-10 AWG Ring Terminals Waterproof, 22-10 AWG Wire Terminals Marine Automotive for #10 1/4" 5/16" 3/8" Stud - Nilight - NI -WA 06 LED Light Bar Wiring Harness Kit - 2 Leads 12V On Off Switch Power Relay Blade Fuse for Off Road Lights Work Light, 2 Years Warranty,Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/224017392-low-oil-pressure-alarm-low-oil-pressure-switch-three-wire](https://www.desertcart.vn/products/224017392-low-oil-pressure-alarm-low-oil-pressure-switch-three-wire) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*