GRAND HAVEN — JSJ Corp. has invested $3 million in a startup company that wants to commercialize a device designed to reduce infections acquired in hospitals and other settings.

UV Partners Inc.’s UVAngel disinfects surfaces using safe, low doses of ultraviolet light. The device mounts atop surfaces such as computer keyboards, touchscreens and equipment. The system’s sensors continuously monitor the surface for bacteria.

The company is targeting the device at the health care, food service and retail industries.