Relays with AC input ("coil") voltage and AC load voltage.
Main benefits comparing to electromechanical relays and opto coupled relays:
- No limited lifetime even with difficult loads, 3 to 10 year warranty depending on relay type
- High tolerance against noises
- Guaranteed switching on- and off-levels
- 100 % clear status indication
- Relatively high transient protection
- Extreme reliability
- No need for over dimension of the relay, all values are effective values
- No minimum load requirement
