... durable; 2. Good magnetic isolation, safe and reliable; 3. Solid frequency conversion power supply, easy operation; Adjustable power rate, easy operation ... up with load or free of load.Electrical Feature: 1. Digital CMOS chip (U. S. ASIC-2-12), with the highest ... starter and relay loop, fairly low failure rate; 7. Wholly digital design, strong in anti-interference, no temperature shift when in ...