We manufacture ultrasonic generator to support the transducers. Comparing with self-excitation PCB, the separatly excitated PCB are more flexible and have more functions. Separatly excited PCB. Features: 1. Advanced waterproof and insulation treatment; 2. Sweep frequency/ double frequency/ set frequency; 3.Remote control; 4. over-flow and over-temperature protection, etc. 5. AC110V/ 220V10% for option; 6. Size: 180mm * 88mm, Positioning holes: 4 * 5mm