| | MA4120 | | | | Min 100dB | 2.5-60 KHz | | 20khz 41mm Piezo Tweeter Speaker Waterproof Ultrasonic Speaker |
| | MA161H103 | | | | Min 110dB | 2.8 KHz | | 161mm 2.8khz 110dB Piezo Ultrasonic Speaker for bird repellent |
| | MA3825 | | | | Min 100dB | 2.5-60 KHz | | 38mm 25khz 2.5~60kHz High Frequency Round Piezo Ultrasonic Speaker |
| | MA8527 | | | | Min 92dB | 2.4-27 KHz | | 2.4khz to 27khz 84mm 92dB 12v Piezo Tweeter Speaker for bird repeller |
| | MA5120N | | | | Min 90dB | 2.5-60 KHz | | 51mm High Frequency Round Piezo Tweeter |
| | MA5120 | | | | Min 100dB | 2.5-60 KHz | | Repellent Device Ultrasonic 20khz Annunciator Speaker |