1 Channel Relay Module Board With Optocoupler Low Level Trigger Expansion For Arduino 5v/12v/24v(12v)

☆【Stable Performance】: The relay module relay board adopts patch photocoupler isolation with strong driving ability and stable performance. The trigger current is 5mA, and the module can be high or low by a jumper setting trigger. The module uses genuine quality relay with normally open interfaces, which is in use. ☆【Fault-Tolerant Design】: This 1 channel 12v relay module with fault-tolerant design, even if the control line breaks, the relay will not move. Power indicator light (green), 4-way relay state indicator light (red). ☆【Humanized Interface Design】: This 1 channel relay module adopts humanized interface design, all the interfaces can be directly connected through the terminal lead, which is very convenient to use. 4 fixing bolt holes are provided. Standard interface can be controlled directly by microcontroller (Arduino ,, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). ☆【More Choices】: The relay module relay board's operating voltage has 5V, 12V and 24V for you to choose. Each path of the module can be triggered by the high level or low level through a jumper setting. ☆【After-Sales Service】: We stand behind all of our items with a product guarantee and promise to give you the best in customer care! If you have any issue about the 1 channel relay module, please contact us by e-mail, we will try our best to reply you within 24 hours.