Use R503 fingerprintscanner on Arduino?


On this Adafruit webpage: Rugged Panel Mount Fingerprint Sensor with Bi-Color LED Ring [R503] : ID 4651 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits for the R503 fingerprint scanner, they attach it right on the I/O’s of an Arduino Uno.

But, is this OK?
When I look at the datasheet, doesn’t it mention that the UART needs 3.3V instead of the 5V

Can someone please tell me it’s alright to hook it to a 5V Arduino?