Seamax SUP20D 20PSI Double Stage Electric Air Pump is an easy-to-use touch button pump with a backlit LED screen for pre-set and real-time air pressure display. It has dual units display, PSI and Bar, and comes with a 9ft power cord and 3.5ft nylon air hose. The pump also includes a universal HR air valve adaptor and 3 different size O-Rings to fit most inflatable SUPs.

This pump features noise reduction inflators for quiet operation. It is an intelligent 12V DC electric pump with a digital control and LCD pressure display. The pump can auto stop at pre-set pressure or 20 minutes of continuous working time. It is suitable for inflatable boats and SUPs equipped with HR (Halkey-Roberts), Bravo, Naru, or similar type air valves.

Pick the best size silicon O-Rings to ensure the best air tight connection. If using more than 1 SUP at the same time, it is recommended to fast cool down the pump by running it in the air for 1 minute between each use. This pump is designed for use in tropical areas such as Florida.

The specifications of the Seamax SUP20D pump include:

• Model: Seamax SUP20D
• Pump Support Rate: 0.5-20 PSI (0.034-1.378 Bar)
• Digital Sensor Accuracy: 0.01 PSI
• Controller Method: Pre-programmed digital controller board
• Max Pumping Speed: 350L/min at 1st Stage, 70L/min at 2nd stage
• Pump Stage 1: Sealed & Quiet turbo fan for high volume inflation
• Pump Stage 2: Engineered cylinder type compressor for high pressure
• Dual Inflators Switch Point: 0.65 PSI
• O Ring Thickness: 0.3mm / 0.5mm / 0.6mm
• Sand Filter: Built-in filters for air intake
• Pump Working Voltage: 11-14V DC
• Max Energy Consumption: 10A, 120W (12V)
• DC Power Cord Length: 9ft (2.75m)
• Air Hose: 3.5ft Length & with HR Valve Adaptors
• Product Net Weight: 3.6 Lbs

The Seamax SUP20D PRO Signature Edition air pump is an upgraded version in the SUP pumps family. It features a programmed intelligent proactive digital controller, voltage sensor, temperature sensor, and overheat protection for managed dual stage inflation. The pump has a backlit LCD display and audible indicator to provide real-time working status to users. Major parts are made of marine grade engineered ABS and Nylon material for durability. It has low power consumption, 5-10A (60-120W), and works well in a wide range of temperatures and humidity.

The first stage of this pump has a max speed of 350L/min, and the second stage has a max speed of 70L/min. It supports pressure setting increments of 0.5 PSI and can inflate up to 20 PSI. The pump offers real-time pressure monitoring and auto stop once the selected pressure is reached. The high efficient dual air inflators are controlled by a digital pressure controller module. The working range is 0.5 - 20 PSI, with an accuracy of 0.01 PSI.

The pump has a built-in sand filter for air intake and pump cooling system. It also features a built-in outtake chamber for noise reduction and better efficiency. The one-way diaphragm valve protects the inflator and maximizes speed. This pump is designed for inflatable boats, SUPs, and paddle boards. It takes about 10 minutes to inflate a 12ft SUP or a 9ft inflatable boat (3.5 PSI) with an air mat floor (12 PSI).

The Seamax SUP20D pump is super lightweight, weighing only 4 lbs, and has dimensions of 10”x7”x7”. It has an easy carry handle and comes with a reinforced 4ft air hose. The pump is the perfect size for pumping boats, SUPs, and paddleboards. The main air hose connector can rotate 360 degrees, providing flexible pumping positions. The pump's screw-in style adaptors ensure a perfect air tight connection.

The pump's 12V DC connector (Car Cigarette Lighter connector) has a built-in 12A fuse. A spare fuse is provided with the package. The pump's user manual is included in the package and is also downloadable from the Seamax Marine website. Whether you use it daily during the season or occasionally throughout the year, this high-quality air pump can always do a good job.

Frequently Asked Questions:

Q: Does the pump have a fitting that fits tightly with a Red Paddleboard so that I don’t have to hold the hose the entire time it is being used?

A: Red Paddle (Canada) also purchased our pump and posted it on their website. So, I believe it is fully compatible with Red Paddle SUP.

Q: Does it work for other inflatables like beds, rafts, and pool toys?

A: The pumping speed and pressure of this SUP20D pump should be good enough for many applications. Your question is related to the air valve fittings. Currently, we can provide a version 2 air hose kit to fit more applications. You may want to purchase this kit. But if the provided valve fitting is just a little bit smaller than the valve inner diameter and loosened, you can use electrical tape to enlarge the valve fitting to make it tight. The version 2 air hose kit is available from Amazon or our Seamax Marine website.

Q: Does it come with a portable lithium 12V 6ah external power supply?

A: No, it does not come with an external battery supply. It works great, just deflated my iSUP.

Q: Do the clamps in the picture mean you can connect it to your car battery?

A: That is correct, though I do not recall receiving those clamps with my pump. I always use it through a 12V outlet in the car.