ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32…

4-channel relay output modules, relay output contacts 250V 10A.
Input IN1, IN2, IN3, IN4, the signal line LOW effective.
VCC, GND power input, can relay a separate power supply relay power input of JD-VCC.

Uses:
1, enhance all MCU keep an eye on.
2, the industrial sector;
3, PLC keep an eye on;
4, smart home keep an eye on;

Make sure this fits by entering your model number.
This relay module is 5V active low. Relay output maximum contact is AC250V 10A and DC30V 10A.
Standard interface may also be directly connected with microcontrollers.
Working status indicator lights are conducive to the secure use
4-channel relay interface board, which may also be controlled directly by quite a lot of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, and so forth. It is usually ready to keep an eye on quite a lot of appliances and other equipments with large current.
Widely used for all MCU keep an eye on, industrial sector, PLC keep an eye on, smart home keep an eye on. For an entire data sheet for this relay board, please download it from: http://dwz.win/UhW