It is a Field Effect Transistor node. 5 stages of field-effect transistors are used in cascading mode to boost the RF signal. a very high sensitive photodiode is used for conversion. FET has very high input impedance and low output impedance. So it produces very little noise. The power supply used here is 12 volt SMPS that is very simple and handy. The power pass input volt is 30 volts to 110 volt AC. It has 2 outputs power with fuse protection. It comes with a working show power indicator- a 4step- optical power indicator. You can use it as a reverse power mode by removing the SMPS power supply. The optical node is the perfect solution for the power problems at your home and workspace.