Item Type:Lightning arrester Insertion Loss:1.2(max) dB Size:47 x 21 x 21mm Style:Coaxial protector Features: 1. Low loss 2. Double copper tube protection, high shielding. 3. Built-in waterproof ring, good waterproof effect. 4. Suitable for CATV transmission system. 5. Light weight and compact, very portable. 6. Easy installation, durable. 7. Lightning-proof gadgets for your home use. 8. Impedance: 75Ohm. 9. Frequency range: 5-2150MHz.