If you’ve ever stopped at a grocery store checkout to weigh your own produce, paid for a bus ticket at a kiosk instead of waiting in line, or handled a simple bank transaction without a teller, you’ve used a self-service kiosk. Now, if you’re looking into adding a dual-screen version of these units for your business or public space, you’ve probably wondered: “How much power do these things actually need?” I’ve been working as a dual screen self service kiosk supplier for the last 7 years, and let me tell you, getting the power specs right is one of the most common questions I get from clients—and one of the most important, too. Mess this up, and you’re dealing with constant outages, overheating, or even blown circuits that can leave your kiosk broken when customers need it most. I’m breaking down what you need to know, no overly technical jargon, just real-world stuff I’ve learned from installing hundreds of these units across offices, transit hubs, retail stores, and government buildings.
First off, let’s start with the basics: what makes a dual screen kiosk different from a single-screen one? Most dual screen models aren’t just two small screens stacked or side-by-side. A lot of them have a primary, larger screen for the user to interact with (like where you’d enter info or view forms) and a secondary, smaller screen for things like transaction receipts, confirmation messages, or staff alerts. The extra screen means a little more power draw than a single-screen unit, but not as much as you might think—especially if you pick components that fit your specific use case.
Let’s talk about the core components that eat up power, because that’s where the real power requirements come from. Every dual screen interactive touch screen kiosk starts with two main displays. Most of the standard displays we use for these units are either LCD or LED—we almost never go with OLED for self-service kiosks, mostly because OLED has a shorter lifespan in 24/7 use, and it draws a lot more power. A standard 21.5-inch LCD primary screen (the most common size for user interaction) uses roughly 25 to 35 watts, and a secondary 15.6-inch LCD screen for confirmations is another 15 to 20 watts. That’s already 40 to 55 watts just for the screens alone, before we add anything else.
Next up is the processing unit. Most of our clients don’t need a super powerful gaming-grade computer for these kiosks—they just need something that can run touch software, handle payments, and maybe connect to a local network. For that, we use small form factor (SFF) industrial computers, which are built to run 24/7 without overheating. A typical SFF PC for a dual screen kiosk draws between 30 and 50 watts, depending on if you add extra features like a card reader or a receipt printer. Throw in a solid-state drive (SSD) instead of a hard disk drive (HDD), and that cuts power draw by another 5 to 10 watts, which is a nice little saving over time.
Then there are the add-on features that many clients ask for, and these are the ones that can bump up power requirements the most. If you’re getting a double screen ticket self-service kiosk for a transit station, you’ll need things like a ticket printer (which uses around 15 to 25 watts when printing, plus 5 watts on standby), a card reader (5 to 10 watts), and maybe a barcode scanner (2 to 5 watts). For a dual screen government tax payment kiosk, you might add a cash acceptor (which can draw up to 30 watts when accepting bills, but goes down to 5 watts on standby) and a fingerprint scanner (2 to 4 watts). Even small things like LED lighting around the touch screen, or a proximity sensor that turns the screen on when someone walks up, add 2 to 7 watts total.
Now, let’s get into the actual power supply and circuit requirements, because this isn’t just about how many watts the unit uses—you need to make sure your building’s power can handle it. First, every dual screen self service kiosk comes with an internal power supply unit (PSU), which converts the building’s AC power to DC power that the kiosk components use. The PSU has a efficiency rating, and we always use 80+ rated PSUs because they waste less power as heat, which means lower electricity bills and less strain on the circuit. For a basic dual screen kiosk with no extra add-ons, the PSU is usually 120 watts, which is more than enough to cover the maximum power draw of all components and leave a little headroom for future upgrades.
If you have a kiosk with a lot of add-ons—like a tax payment kiosk that has a cash acceptor, receipt printer, and two screens—you’ll need a 200 to 250 watt PSU. That extra headroom is important because components like printers and cash acceptors have power spikes when they start up, and if the PSU isn’t big enough, it might shut down temporarily when the printer turns on, which would frustrate customers.
Now, let’s talk about the circuit requirements. Most home outlets are 15-amp circuits, and standard 120V outlets are fine for almost all dual screen kiosks, even with add-ons. Wait, why? Because a 15-amp circuit can handle up to 1800 watts, and the maximum power draw of a dual screen kiosk is usually under 150 watts, even with all the extra stuff. The only time you need a dedicated circuit is if you’re putting multiple kiosks in the same space—like 5 ticket kiosks at a bus terminal—because you don’t want one circuit to be overloaded if all 5 are running at once. For a single kiosk, though, a standard wall outlet is totally fine, no need to call an electrician to install something fancy (we always mention that to clients, since it’s a common misconception that kiosks need special power setups).
Another big thing that affects power requirements is whether the kiosk is running 24/7 or only during business hours. Most self-service kiosks are meant to be available when customers need them—so 24/7 in places like transit stations, airports, or 24-hour retail stores. If that’s the case, you’ll want to make sure the components are designed for continuous operation, which also means the power draw is consistent. Our industrial SFF PCs and LCD screens are built to run 24/7 without overheating, so their power draw stays steady, unlike consumer parts that might use more power when they heat up. For kiosks that only run during 9am to 5pm, you could even add a power-saving mode that turns the screens down or puts the PC on standby when not in use, which cuts power draw by 50 to 70% during off-hours. We’ve had clients who installed that on their dual screen government service kiosks in city halls that are only open during work hours, and their electricity bills dropped by almost $200 a month per unit—small change that adds up.
Wait, let’s address a common mistake I see a lot of new clients make: they buy the cheapest components to save money upfront, but end up with higher power bills and more maintenance. For example, a cheap LED screen might use 10 watts less than a good quality LCD, but it burns out in 18 months instead of 5 years, and it uses more power over time because it’s not as efficient. Also, cheap PSUs are less efficient, so they waste 15 to 20% more power as heat, which not only increases your electric bill but also makes the kiosk run hotter, which can damage internal parts over time. I always tell clients that spending a little more on quality components for power efficiency saves them way more in the long run—we’ve tracked data from clients and found that our dual screen kiosk units use 10-15% less power than competitors’ models, which adds up to hundreds of dollars a year in electricity costs per unit.
Another factor is the environment the kiosk is in. If you’re putting a kiosk outdoors, or in a very hot place like a shopping mall in the middle of summer, you’ll need a kiosk with cooling fans or ventilation, which adds a little to power draw (usually 5 to 10 watts for the fans). If it’s in a cold place, like a transit station in a northern city, you might need a small heater to keep components working in freezing temperatures, which can add 15 to 20 watts when the heater is on. We design all our units with environment-specific adjustments, so we can tweak the power requirements based on where you’re installing it—just let us know the location and use case, and we’ll send over the right specs.
Let’s also talk about power management features, because that’s something that’s easy to overlook but makes a big difference. All our dual screen self service kiosks come with built-in power management software that adjusts screen brightness based on ambient light—so the screen is bright enough for customers in a well-lit store, but dimmer when the space is dark, which cuts power draw. The software also puts the PC and screens on low-power mode during periods of inactivity—like late at night when no one is using the ticket kiosk at a train station. Some clients even add remote power monitoring, so they can check if a kiosk is drawing too much power, which might be a sign of a problem like a faulty screen or PSU, before it breaks down.
Now, I know some of you are thinking, “Wait, what about commercial vs. residential power?” If you’re putting a kiosk in a retail store or office that’s connected to commercial power, that’s totally standard—our units work with 120V, 220V, whatever your local power standard is, as long as it’s a standard outlet. We ship our kiosks with power adapters that work in most countries, so you don’t have to worry about custom power parts unless you’re in a very remote area with non-standard power.
Let’s wrap this up with a quick example to make it real. Say you’re a local transit authority that needs a double screen ticket self-service kiosk for a new station. This unit needs a primary 21.5-inch LCD screen (30W), a secondary 15.6-inch confirmation screen (18W), an SFF PC (35W), a receipt printer (20W when printing, 5W standby), and a contactless card reader (8W). Total maximum power draw when all parts are in use is roughly 116 watts, and the power draw on standby is around 36 watts. That’s way under the 15-amp circuit’s capacity, so you can plug it into a standard wall outlet. The PSU we use for this unit is 150 watts, 80+ rated, so it’s efficient and has enough headroom for when the printer starts up. With the power-saving mode, this kiosk would draw around 50 watts during off-peak hours, so your monthly electricity cost would be around $10-$15, which is nothing for a transit station serving hundreds of people a day.
At the end of the day, the power requirements for a dual screen self service kiosk aren’t as complicated as they sound—they mostly depend on the components you choose and the features you need. The most important thing is to not cut corners on quality parts, because that’s where you end up with higher costs and more downtime. If you’re looking for a reliable dual screen interactive touch screen kiosk, or want to talk through the power needs for your specific project, feel free to reach out. We’ve installed hundreds of these units across all kinds of spaces, from government buildings to grocery stores to airports, and we can help you find the right setup that fits your budget and space.
References:
- Industrial Kiosk Association. (2022). Power Requirements for Self-Service Kiosks: Best Practices for 24/7 Operation.
- Energy Star. (2021). Efficient Power Supplies for Commercial Electronic Devices.
- Transit Innovation Partnership. (2023). Self-Service Ticketing Kiosk Power and Maintenance Guidelines.
- National Institute of Standards and Technology. (2020). Environmental Considerations for Outdoor and High-Use Self-Service Kiosks.
