This series of relay modules use optocouplers for isolation,stable performance. it is humanized design can choose high-level or low-level trigger , so it can use 5mA Current to drive Drive the :relay pull-in" which have the 10A control capacity .The module combine with the high-quality power relays,Small package optocoupler,High-power and high-voltage triode,Red and blue signal knowledge light,Military-grade double-sided PCB board.

1.Using genuine high-quality relays

2.Optocoupler isolation

3. strong drive c1.apability

4., stable performance

5.Multiple working voltages optional,Multiple output optional.

6.dual indicator to Power supply and working