Spiral mixer features explained: inverter, bowl lights, temperature sensor and more
Spec sheets sum up features in a word or two: inverter, reverse, IR sensor, LED. Here's what each one actually does to your dough, which Sunmix models have it, and which ones are worth paying for.
Who’s behind this: the team at TheLoveOfDough, the eBay store that sells these Sunmix machines. Links to eBay go to our own listings.
Short answer: every Sunmix Easy and Evo has an inverter, which gives you any spiral speed from 50 to 300 RPM and a smooth start, and reverse, for combining preferments without kneading them. The Evo adds an infrared temperature sensor that stops the mix at a dough temperature you set, LED lights inside the bowl, and a touch screen that stores 20 recipes. The inverter and the temperature sensor change your dough the most.
Which Sunmix mixer has what
| Feature | Easy 6–20 | Evo 6–15 | Smart 40 |
|---|---|---|---|
| Inverter speed control | 50–300 RPM | 50–300 RPM | 70–300 RPM |
| Reverse | Yes | Yes | Yes |
| Bowl-to-spiral ratio | 1:9 | 1:9 | 1:7 |
| Dough temperature sensor | No | Infrared; stops the mix at your maximum | Laser sensor |
| LED lights in the bowl | Not standard | Yes, switch on and off | Yes |
| Stored recipes | No (knobs) | 20, up to 6 steps each | Up to 12 |
| Power | 110V (Easy 20: 220V) | 110V | 220V |
The inverter: any speed you want, and a gentle start
Many commercial spiral mixers have two fixed speeds, slow and fast. A Sunmix has an inverter instead: an electronic speed control between the outlet and the motor. Turn the knob on an Easy or tap the screen on an Evo, and the spiral runs at any speed from 50 to 300 RPM, not just one of two. That 50 RPM floor is the lowest of the mixers in our brand comparison.
Why that matters for your dough:
- Start slow, without a flour cloud. At the lowest speeds the spiral brings flour and water together gently, so the flour stays in the bowl.
- Speed up when the dough is ready. Once it has come together, a higher speed builds gluten in less time.
- Another way to manage heat. Mixing turns motor work into heat in the dough. Choosing the speed and time, not just "slow" or "fast", gives you more control over where the temperature ends up. The science of mixing explains why.
- A smooth start. Inverter drives generally ramp the motor up instead of switching it straight on at full power. That's easier on the drive parts and avoids the big current surge a motor pulls when it starts at full speed.
Sunmix's own pitch is versatility: one mixer for any dough you make. In practice, that means a slow, cool mix for Neapolitan dough on Monday and a quick finish on a wet focaccia dough on Tuesday, on the same machine.
300 RPM: the top gear, used briefly
Sunmix says the top of the range is meant for wetter doughs, over 60% water, in the last phase of mixing and only for a short time. Think of it as a finishing gear: once the dough has come together at lower speed, a short burst helps a wet dough tighten up and pull away from the bowl. Run it too long and you add heat and risk overmixing.
Reverse: mixing without kneading
Reverse turns the bowl the other way. Sunmix explains that this lets ingredients come together and absorb without being kneaded, and recommends it for biga and other preferments, and for refreshing a sourdough starter. That's exactly what those need: a biga, for example, should end up as a shaggy, lightly mixed mass, not a smooth, developed dough.
The 1:9 bowl-to-spiral ratio and the breaker bar
On the Easy and Evo, the spiral turns nine times for every turn of the bowl. Sunmix calls it the right balance for even mixing: the bowl keeps bringing fresh dough to the spiral, so the whole batch is worked evenly rather than one part getting overworked. The stainless steel breaker bar in the middle of the bowl helps too, stopping the dough from just riding around with the spiral so it gets stretched and folded on every pass. The larger Smart 40 uses a 1:7 ratio.
The temperature sensor: mix to a temperature, not a clock
This is the Evo's biggest upgrade. An infrared sensor reads the dough's temperature while it mixes, without touching it, and shows it live. You set a maximum, and when the dough reaches it, the mixer stops.
Why that's useful: final dough temperature sets the pace of fermentation. A couple of degrees too warm and your dough is ready, or overproofed, hours early. Mixing heat is one of the biggest swings. A hot afternoon, a bigger batch or a few extra minutes can push you over without anyone noticing. With the sensor, the mixer stops before that happens. Our dough temperature guide covers the targets pizzaioli and bakers use.
What it doesn't do:
- It can't cool the dough. It stops the mix; it doesn't bring the temperature down. You still need the right water temperature, and our water temperature calculator does that math.
- It reads the surface. Like any infrared thermometer, it sees the outside of the dough. Because the dough keeps turning, that's a close guide, but check it against a probe thermometer when you set up a new recipe.
- Stopping on temperature isn't the same as being done. If the mixer stops because the dough got warm before it was fully developed, start with colder water next time rather than mixing on.
This is the feature that sets the Evo apart. Of the 110V spiral mixers sold in the US that we checked in October 2026, it's the only one that stops on dough temperature; sensors like it usually come on big bakery spirals of 30 kg and up. See our brand comparison.
The Easy has no sensor. With an Easy, an inexpensive probe thermometer and the calculator get you most of the way. The Smart 40 has a laser temperature sensor.
LED lights inside the bowl
The Evo has LED lights that shine into the bowl, and you can switch them on and off. It sounds minor, but under a counter, in a dim prep room or at six in the morning, seeing the dough clearly through the guard helps you judge the moments that matter: when the flour is fully absorbed, when the dough clears the sides of the bowl, and when its surface turns smooth. Sunmix puts it simply: the lights keep the dough under control through every stage of the mix.
The lights are standard on the Evo and the Smart 40, but not on the Easy. They aren't unique to Sunmix: the Ooni Halo Pro and Famag's 230V IM-20 HH have bowl lights too.
The touch screen and 20 stored recipes
The Evo's touch screen stores up to 20 recipes, each with up to 6 steps. A step is one stage of the mix: for example, a few minutes slow to bring the dough together, then a faster stage to develop it. Save it once and anyone on the team gets the same mix by picking the recipe. That's how a Tuesday-night batch ends up matching a Saturday one.
0:31The Smart 40 stores up to 12 recipes.
Moon dough rounder features
- 4 speeds, set with a speed control.
- Non-stick, Teflon-coated auger, rated by Sunmix for doughs up to 70% hydration.
- Comes apart for cleaning, with a stainless steel upper tray.
- Wheels with brakes: roll it to the bench, lock it in place, roll it away to clean.
- Regular 110V outlet, 7 amps, for both the Moon 300 and the Moon 1000.
More in our dough ball rounder guide.
Which features are worth paying for?
- Inverter and reverse: the most useful features on any spiral, and every Easy and Evo has both. No extra cost.
- Temperature sensor: worth it if you mix every day, if your kitchen runs hot, or if different people mix your dough. It's the main reason to choose the Evo.
- Stored recipes: worth it if staff mix your dough; less so if one person mixes the same dough by feel.
- Bowl lights: nice to have, not a reason to buy on their own.
Weighing the two lines? Our Easy vs. Evo review goes deeper, and the mixer size calculator tells you which size fits your volume.
Sources
- Sunmix USA, Easy line: inverter, 50–300 RPM, reverse, 1:9 ratio. sunmixusa.com
- Sunmix USA, Evo line: touch screen, infrared temperature sensor, LED bowl lights, inverter. sunmixusa.com
- Sunmix USA, Smart line: laser temperature sensor, LED lights, 12 recipes, reverse bowl rotation. sunmixusa.com
- Sunmix USA, Moon rounder. sunmixusa.com
- Sunmix (Italy), Evo line: 300 RPM use, reverse for preferments, switchable bowl lights. sunmix.it
- Sunmix (Italy), Moon: Teflon-coated auger, doughs up to 70% hydration. sunmix.it
Questions people ask
What does an inverter do on a spiral mixer?
It's an electronic speed control. Instead of one or two fixed speeds, it lets you run the spiral at any speed in its range (50–300 RPM on the Sunmix Easy and Evo), and it brings the motor up to speed smoothly instead of starting at full power.
Does the Sunmix Easy have a temperature sensor?
No. The infrared dough-temperature sensor that stops the mix at a temperature you set is an Evo feature. With an Easy, use a probe thermometer and our water temperature calculator.
What is reverse used for on a spiral mixer?
On Sunmix mixers, reverse turns the bowl the other way, so ingredients come together and absorb without being kneaded. Sunmix recommends it for biga and other preferments, and for refreshing a sourdough starter.
Can you turn off the LED lights in the Sunmix Evo bowl?
Yes. Sunmix says the bowl lights can be switched on and off.
Does the temperature sensor replace a thermometer?
For day-to-day mixing, mostly yes. It reads the surface of the dough as it turns, so check it against a probe thermometer when you set up a new recipe.