Assuming it’s a Clipper Creek EVSE the yes they are dual voltage. Make sure it’s a clipper creek (post a photo) as I’d they happened to swap it out with somemetning else, most others are not 240v friendly.
Take note it’s not a true L2, it’s L1.5, so 16A@240v, not 32a like a true L2. But all Volts aside from the last 2019 model year only charge at 16A on 240v anyways so it’s no biggie. Still halved charging time. And the install for a 16A 240v circuit to your garage is waaaaaay less expensive then a 32a circuit. If you’re handy you can basically do it yourself with a roll of armour wire off the shelf from Home Depot and a new breaker.