The T1ZM1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.02 to 1.04 GHz, Average Power 2 kW, Average Power Forward 2 kW, Insertion Loss 0.3 dB, Isolation 25 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1ZM1 can be seen below.