This product adopts the principle of 1/4 short-circuit wavelength to achieve good protection effect. The arrester has a solid structure, beautiful appearance and convenient installation. One end is connected to the antenna, and one end is connected to the feeder. The side of the arrester has a screw ring for grounding. It can be inserted into a thick copper wire and pressed tightly with a vise. Then the other end of the copper wire is connected to the protection net on the top of the building. The contact must be sufficient. and high quality requency Range:DC-1000MHz V.S.W.R less than equal 1.1 Loss less than equal 0.2dB Withstand power:400W PEP Voltage at discharge start:DC350V+-15% Discharge voltage of (1 x 40)uS:1,000V Withstand current of (1 x 40)uS:6,000A Repetitive discharge of (1 x 40)uS 500A,over 500 times:DC350V±20% Insulating resistance DC 100V:Over 10,000M ohm Colour:As Shown Material:Metal Package Contents: 1 x CA-23RP Surge Protectors 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.