XLX 3PCS 4 Channel Relay Module 12V Relay Expansion Plate Load Controlled Relay Switch Module Supports AVR 51 PIC Relay Module

4 relay output modules, relay output contacts up to 250A 10A. Input IN1, IN2, IN3, and IN4 signal lines are active low. VCC, GND power input terminal, relay can be separately powered by relay power input terminal JD-VCC. Use: 1, support all microcontroller control. 2. Industrial field; 3. PLC control; 4. Home intelligent control; ?Features?  High current relay, AC250V 10A DC30V 10A  The parts of the contacts are independently wired, safe and reliable  Standard interface for expansion on various development boards 1. This module complies with international safety standards, and the control area and the load area have isolation slots; 2, the use of double-sided FR-4 circuit board design, high-end patch production; 3. Adopt relay control; 4, with relay action indication, the suction is bright, the disconnection is not bright; 5. When the signal input terminal has a low level signal, the common terminal and the normally open terminal will be turned on; 6, the relay can directly control various equipment and load; 7, there are 4 normally open and 4 normally closed contacts; 8. The blue KF301 terminal is more convenient to connect to the control line. 9. Package include: 3pcs Two module interface: 1, VCC: connect 12V power positive 2, GND: connect 12V power supply negative 3, IN1-IN4: signal trigger terminal, active low. Relay output: 12-line interface, all interfaces can be directly connected to facilitate user access. 1.NO1--NO4: The relay normally open interface, the relay is suspended before the suction, and the short is connected with COM after the suction. 2.COM1--COM4 relay common interface. 3.NC1--NC4: relay normally 3.closed interface, shorted to COM before the relay is pulled in, and suspended after suction.