Power transformer suitable for 800W, with maximum output power of 500W. Small transformers cannot exceed their rated output, for example, a 50W transformer cannot output 80W. Voltage stabilizing function: When the transformer outputs 12V, there is no voltage stabilizing function. Transformers with output between 8V to 10V have voltage regulation capability, allowing customers to adjust the voltage. Voltage stabilization supports 220V voltage sampling board. Features input reverse connection protection and 10V low-voltage under-voltage protection. Output frequency: 50Hz (pre-adjusted before shipment). Output voltage is set to approximately 220V at shipment; AC side voltage may fluctuate. Includes a small fan to assist in maintaining stable output waveform. Can produce an approximate sine wave output. Capacitive components consume power and reduce conversion efficiency. Do not connect inductive loads. Adding external capacitors is not recommended. Input voltage: 10V to 15V Output waveform: Square wave or sine wave (depends on transformer type and 220V feedback; without feedback, outputs square wave) Quasi-sine wave inverter board Requires external 50Hz, 220V transformer; compatible with 8-12V transformers. Even with feedback voltage above 10V, voltage stability may vary. Low-voltage side winding must meet standard transformer specifications (silicon steel core) Size: 88 x 72 x 46mm Material: ABS Color: Green + White Package Contents: 1 x Inverter Drive Board Only the above items are included; others are not part of the package. Note: Lighting and display differences may cause slight color variations between the image and actual item. Measurement tolerance is +/- 1-3cm.