--- product_id: 64103516 title: "Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection" brand: "seamax" price: "$322.60" currency: USD in_stock: true reviews_count: 13 category: "Seamax" url: https://www.desertcart.us/products/64103516-seamax-sup20d-20psi-double-stage-electric-air-pump-for-inflatable store_origin: US region: United States of America --- # Dual-stage 20 PSI max pressure Backlit LCD with real-time pressure monitoring Built-in temperature & voltage protection Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection **Brand:** seamax **Price:** $322.60 **Availability:** ✅ In Stock ## Summary > 🚤 Inflate like a pro, wherever adventure calls! ## Quick Answers - **What is this?** Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection by seamax - **How much does it cost?** $322.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/64103516-seamax-sup20d-20psi-double-stage-electric-air-pump-for-inflatable) ## Best For - seamax enthusiasts ## Why This Product - Trusted seamax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Safety Tech:** Intelligent firmware with temperature sensor and voltage protection keeps your pump safe and durable. - • **Compact & Portable:** Lightweight 4 lbs with a 360° swivel hose and easy-carry handle—inflate anywhere, anytime. - • **Marine-Grade Durability:** Crafted from ABS and Nylon materials designed to withstand harsh outdoor conditions. - • **Rapid Dual-Stage Pumping:** 350L/min first stage speed plus quieter 70L/min second stage for fast, efficient inflation. - • **Precision Inflation Control:** Set your exact PSI with 0.5 increments and auto-stop for perfect inflation every time. ## Overview The Seamax SUP20D PRO Signature Edition is a cutting-edge electric air pump engineered for inflatable SUPs, boats, and paddleboards. Featuring dual-stage inflation up to 20 PSI, intelligent firmware with real-time LCD monitoring, and built-in safety sensors, it delivers fast, precise, and safe inflation. Its marine-grade ABS and Nylon build ensures durability, while its compact 4 lb design with a swivel hose makes it the ultimate portable pump for every water enthusiast. ## Description Product description INTERNAL STRUCTURE Built-in the smart control chip, including temperature sensor function and time counter function. The safety intelligent pressure system will automatically stop inflating when it reaches the targeted PSI. HIGH-END FEATURES The New Seamax version with firmware and hardware improvement, helps the pump work better in hard conditions, such as a wide range of product support, lower battery voltage, or poor 12V socket connection. EASY TO OPERATE The practical carry handle makes it easy to carry. Use the digital display to set your desired pressure and monitor the pressure in real-time. ABOUT DEFLATION To do the deflation, you should press open the air valve on SUP and lock it at the open position. First, let the SUP leak out all the high-pressure air until zero pressure. You may only need a few seconds to see the SUP getting flat after the loud air leaking sound. Then you connect the hose to the SUP to do the final deflation. 3 PADDLE BOARDS IN A ROW Benefit from its temperature control feature, you can feel free to pump up to 3 SUPs without overheating damage issues. otherwise, this pump will auto stop if over the workload and give a beep sound warning. FOR LEAFIELD C7/D7 AIR VALVES The package has included the compatible valve fitting for the special Leafield air valve. Seamax also has the original valve fitting kit for sale (Check with our Version 3 air hose kit) SPECS OF SUP20D PRO SIGNATURE EDITION Pump Support Rate: 0.5-20 PSI (0.034-1.378 Bar), Digital Sensor Accuracy: 0.01 PSI Controller Method: Pre-programmed digital control board with LED Display Max Pumping Speed: 350L/min at 1st Stage, 70L/min at 2nd stage Pump Stage 1: Turbofan for high volume inflation Max 1.2 PSI Pump Stage 2: Engineered cylinder type compressor for high-pressure Max 20 PSI 4 Feet Nylon Air Hose Material, Max temp holding 120°C/248°F O Ring Thickness: 0.3mm / 0.5mm / 0.6mm & Multiple Valve Adaptors Pump Working Voltage 11-14V DC, Max 200W, 9FT Power Cord with 12A fuse ## Features - Seamax SUP20D PRO Signature Edition air pump is an upgraded version in our SUP pumps family. Programmed intelligent proactive digital controller, voltage sensor, temperature sensor, and overheat protection for managed dual stage inflation. Backlit LCD display and audible indicator to provide real-time working status to users. Major parts made of marine grade engineered ABS and Nylon material for durability. Low power consumption, 5-10A (60-120W). Wide range of working temperature and humidity. - 1st stage max speed 350L/min; 2nd stage max speed 70L/min, Pressure setting increments 0.5 PSI and support up to 20PSI. Real time pressure monitoring and auto stop once selected pressure reached; High efficient dual air inflators controlled by digital pressure controller module; Supported working range 0.5 - 20 PSI (20 PSI = 1.378 Bar =138 Kilo-Pascal); accurateness 0.01 PSI. - Built-in sand filter for air intake & pump cooling system; Built-in outtake chamber for noise reduce and better efficiency. One-way diaphragm valve to protect the inflator and maximize the speed. Designed for inflatable boat, SUP and paddle board; About 10 minutes to inflate a 12ft SUP or a 9ft inflatable boat (3.5 PSI) with air mat floor (12 PSI) fast and easy. - Super light weight 4Lbs and Dimension only 10”x7”x7” with easy carry handle; Reinforced 4ft air hose. Perfect handy size for pumping boats, SUPs and Paddleboards. 360 degree free turning main air hose connector provides flexible pumping positions. Screw-in style adaptors provide perfect air tight. - The pump’s 12V DC connector (Car Cigarette Lighter connector) has a built-in 12A fuse. Cigarette lighter spare fuse is provided with the package. Pump user manual is included in the package and downloadable from our website. Regardless daily use during the season or occasionally use in a year, this high-quality air pump can always do a good job. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07C5K7HFM | | Air Flow Capacity | 350 Liters Per Minute | | Best Sellers Rank | #233,336 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #623 in Inflation Devices & Accessories | | Brand | Seamax | | Brand Name | Seamax | | Color | Blue | | Connector Type | Car Cigarette Lighter connector | | Customer Reviews | 4.0 out of 5 stars 2,001 Reviews | | Hose Length | 3.5 Feet | | Item Weight | 3 Pounds | | Manufacturer | Seamax Marine | | Material | Abs,Nylon | | Material Type | Abs,Nylon | | Maximum Pressure | 20 Pound per Square Inch | | Model Number | SUP20D PRO Signature Edition | | Operation Mode | Manual | | Power Source | Corded Electric | | UPC | 721541238560 | | Unit Count | 1.0 Count | ## Product Details - **Color:** Blue - **Brand:** Seamax - **Material:** Abs,Nylon - **Item Weight:** 3 Pounds - **Power Source:** Corded Electric ## Images ![Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection - Image 1](https://m.media-amazon.com/images/I/71lu5DbtdpL.jpg) ![Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection - Image 2](https://m.media-amazon.com/images/I/71Erleip5aL.jpg) ![Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection - Image 3](https://m.media-amazon.com/images/I/71ubo6uAiJL.jpg) ![Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection - Image 4](https://m.media-amazon.com/images/I/71p8hVLGFKL.jpg) ![Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection - Image 5](https://m.media-amazon.com/images/I/71InBP12bxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***K on June 14, 2019* ### ⭐⭐⭐⭐⭐ Review *by M***E on August 19, 2018* ### ⭐⭐⭐⭐ Review *by E***E on August 3, 2021* ## Frequently Bought Together - Seamax SUP20D 20PSI Double Stage Electric Air Pump for Inflatable SUP and Boat, New Version Intelligent Firmware with Built-in Temperature Sensor and Voltage Protection - SEA DOG WATER SPORTS Kit de reparación de embarcaciones inflables, 4 X PVC Patch, 2 X 30g Glue --- ## 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.us/products/64103516-seamax-sup20d-20psi-double-stage-electric-air-pump-for-inflatable](https://www.desertcart.us/products/64103516-seamax-sup20d-20psi-double-stage-electric-air-pump-for-inflatable) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-12*