This is SM Instruments'(SMI) Ultrasonic Camera BATCAM 2.0.
BATCAM 2.0 is the world’s lightest and smallest ultrasonic camera. It can be used for various objectives, because it can measure not only signal in audible range but also in ultrasonic range. It has 112 microphones for high measurement sensitivity and can detect ultrasonic signal at 48kHz.
BATCAM 2.0 can clearly measure not only car BSR(Buzz, Squeak, Rattle), but also the minute air · gas leak, and the electric arc.