1. Rf Limiters Are Used For Input Protection Of Low-Power Receiving Equipment Such As Pre-Low Noise Amplifiers, Sdr Receivers, And Spectrum Analyzers. 2. Can Effectively Resist Esd Damage. 3. Can Also Be Used For Input Protection Of Shortwave Receivers. 4. Contains A Sturdy Aluminum Alloy Shielding Shell, No Leakage, No Interference, Compact And Easy To Use 5. It Is A Common Device For Radio Frequency And Microwave Technology Experiments. Model:Limiter 0dBm-10dBm-20dBm-30dBm-36dBm Impedance:50 Ohms Insertion loss:Less than 0.2dB @1GHz/0dBm;Less than 2dB @1-3GHz/0dBm;Less than 3dB @3-6GHz/0dBm Maximum input power:20dBm 1dB limiting power:Less than 0dBm/10dBm/20dBm/30dBm/36dBm Interface:SMA Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Gold Material:Metal+Plastic Size:without shell:about 10x25 (mm) without protruding SMA; Dimensions with shell - length, width and height:about 45x25x12(mm) without protruding SMA Package Contents: 1 * Rf Limiter 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.