Santa Barbara Infrared’s 2nd generation Nightingale Body Temperature Reference (BTR) sources provide the same stable, uniform, low cost and simple to operate thermal sources for human body temperature detection. In addition, the 2nd generation systems comes standard with power over ethernet (PoE+) and Bluetooth®, removing the need for a separate power source or a USB connection. Nightingale sources are primarily designed to be incorporated into COVID-19 related thermal imaging body temperature screening systems. The Nightingale Body Temperature References work by providing a viewable thermal reference area for infrared (thermal) camera systems to aid in fever detection. The Nightingale BTR source features “set and forget” configuration. An operator simply configures the reference source through either the USB, ethernet or Bluetooth® interface options and stores the set point into non-volatile memory. After configuration, the blackbody automatically controls to the set point upon each power up. A status LED visually indicates when the reference is stable and ready for use as a calibration source. The Nightingale’s performance has been optimized for a range of absolute temperature set points and ambient conditions that are required by most body temperature screening systems. The Nightingale BTR sources are IEC 80601-2-59 compliant.