4pcs Dc 5v 2 Channel Relay Module Board with Optocoupler for Arduino

This Relay Board Maximum load: AC 250V/10A, DC 30V/10A with power and relay action indicator.Using SMD optocoupler isolation, strong driving capability, stable performance.The module can be set high or low triggered by jumper.Fault-tolerant design, even if the control line is broken, the relay will not move.All interfaces can be directly wired out through the terminals.Colour: Red+BlueMaterial: plastic + metalPackage Contents:4 x DC 5V 2 Channel Relay Module BoardNote: product appearance varies with different batches , But does not affect the useOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.