Potential answers for "Ultrasonic sound emitter"

⭐⭐⭐⭐ BAT
⭐⭐ DIODE
⭐⭐ ECIG
⭐⭐ ODORANT
⭐⭐ DOGWHISTLE
⭐⭐ PULSAR
⭐⭐ QUASAR
⭐⭐ RADIUM
⭐⭐ LASER

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