1) Add a surge protection circuit to prevent high voltage. 2) Use a set of differential mode filters and two differential inductors to perform differential mode filtering on the AC power supply to suppress mid- and high-frequency interference. 3) Three sets of common mode filters are combined with X2 capacitors and common mode inductors to form a common mode filter. Due to the use of three levels (also known as three levels) filtering, the effect of filtering out noise is better. It can effectively suppress the fast transient group pulse interference problem in some user locations with a repetition frequency of several thousand Hertz. Type: EMI Filter Style: EMC Safety Regulations FCC: Electrical EMI Filter: AC 220v Power Supply Four-stage (four-stage) EMI line filter Input Voltage: Single-phase AC 110-250V Output Voltage: Single-phase AC 110-250V Input Port: Three-wire 7.62 socket input Output Port: Three-wire 7.62 socket output Function: Surge Protection (Overvoltage Protection) Short Circuit Protection Differential Mode + Common Mode Bidirectional EMI Filtering to Prevent Interference Extend the lifespan of electrical appliances and increase equipment stability Load Rated Current: 16A Color: As shown Material: ABS Package Contents: 1 * Filter 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 to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.