1.Intelligent frequency conversion adjustment: supports 40Hz-150Hz wide-band speed regulation, automatically optimizes operating efficiency according to refrigeration needs, and saves energy and electricity. 2.Stable power supply: adopts high-specification circuit design to voltage stability, reduce compressor shock, and extend service life. 3.Ultra-quiet operation: optimize algorithm, reduce the start-stop noise of the compressor, and make the refrigerator run quieter. 4.Widely compatible: adapt to a variety of for /for frequency conversion refrigerators, replace the damaged driver board, and easy to repair. 5. and reliable: industrial-grade PCB board, moisture-proof and dust-proof, strong anti-interference, long-term stable operation. Input voltage: 220-240V / 50-60Hz Current: 2.1A Output voltage: 230V Frequency range: 40Hz-150Hz Current: 2.1A Model: 0193525188 Compatible compressor: for Embraco QD (VCC3 2456) Note: Please check the refrigerator model and compressor parameters before installation to compatibility. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: Black Material: plastic Package Contents: 1 x Inverter Board Driver Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.