The MS31 switch uses the top-of-the-line technology when it comes to touchless sensor switches.  This product line bounces a frickin' radar beam off of the users hand to detect presence.  The radar is more sophisticated than other technologies and offers proper operation under a wide array of environments and has adjustable activation range.  Unrivaled detection range from up to 24" away but can be adjusted down to 4".  The device can be set up as a momentary relay output from a half a second to 30 seconds, or can also be set up to toggle the output on detection.  "Single + Double" part numbers come with plates for both single and double gang electrical boxes.

BEA’s MAGIC SWITCH Family can be adjusted to comply with the ANSI 156.10 knowing act standard.  There are a variety of faceplate colors and styles available so make sure you are selecting the proper cosmetic when ordering*.  This unit's detector module gets clipped on to the back of the faceplate, and then the faceplate gets screwed into the prep.  FCC approved, AAADM certified.

For applications requiring hygienic activation include hospitals, pharmacies, clean rooms and foodservice facilities, this technology can't be beat.  

Datasheet: 75.5985.01.EN-MS31-20200630.pdf (beasensors.com)

Manufacturer's site: MS31 | BEA Americas (beasensors.com)

YouTube Video: https://www.youtube.com/watch?v=-M4haXAcYuk

*Some variants may not be available for immediate shipment.