1. This Filter Module Can Filter Out Clutter Signals Outside The Frequency, Making The Received Signal Cleaner. 2. The Filtering Range Is 2.3-2.5ghz. The Wide Filtering Range Ensures Stable And Reliable Signal Reception. 3. It Adopts 1.6mm Thick Double-Sided Printed Circuit Board, Which Is Very Durable And Not Easy To Break After Long-Term Use. 4. One-Piece Molding, Smooth Surface Without Burrs, Installation Is Very Simple And Quick. 5. Using The Full Spray Tin Process, Both Large And Small Currents Can Easily Pass Through The Module. Project Type: Band Pass Filter Module Parameter Index: 1. S21 Greater than -3.6db; 2. S11 Less than -15db; 3. S22 Less than -13db; Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 x Bandpass Filter Module 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.