The Thor Smart Filter Duo is the best way to protect your most valuable electrical equipment. The space saving design now means you can have surge protection and filtration anywhere. 1880J rating for very robust surge power protection High noise filtration Reaction time less than 1 nanosecond 2 protected outlets Large plug adaptors Space saving flat head plug 1.0m cable length Fire retardant Thor SmartBrain The Thor SmartBrain not only protects from surges, it also filters and cleans electrical frequency noise. The filter works both ways, stops noise from robbing equipment performance as well as connected devices’ noise contaminating power. Inside the brain All serious power protection diverts excess energy to earth first. If there is good earth connection then the protector will last longer. C2 has an earth detection LED for this reason. SmartBrain entry level filter is a passive technology. The filter works both ways, stops noise from robbing equipment performance as well as connected devices’ noise contaminating power.