DollaTek 5V 1 Way Relay Module With Optocoupler Expansion Board High And Low Trigger LED Warning Lamp (DC 0 5V) 5PCS

1 Channel Way DC 5V Board Protector Relay Module Board with Optocoupler High Support Low for Arduino Trip Level 1CH The module uses genuine high-quality relay, the maximum load of the normally open interface: AC 250V/10A, DC 30V/10A Using patch optocoupler isolation, strong driving ability, stable performance; trigger current 5mA The module can be triggered by a jumper to set a high level or a low level; Fault-tolerant design, even if the control line is broken, the relay will not move; Power indicator (green), relay status indicator (red) The interface design is user-friendly, all interfaces can be directly connected through the terminal block, very convenient