Baytems will release new versions of S3010-A and S3020-A Line Impedance Stabilization Networks (LISN) within next weeks. We have improved and simplified the design. The main difference is that attenuation and limitter are now fixed and a remote control as available as an option from now on. The new product numbers are S3010-B and S3020-B. If you have any questions regarding the change, please contact our support.