Sell 5V 12V 4 Channel Relay Module Shield for Arduino ARM PIC AVR DSP Electronic with optocoupler Relay Output 4 way Relay best price

5V 12V 4 Channel Relay Module Shield for Arduino ARM PIC AVR DSP Electronic with optocoupler Relay Output 4 way Relay 4-channel relay output modules,relay output contacts 250A 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. Application Uses: 1, support all MCU control. 2, the industrial sector; 3, PLC control; 4, smart home control 【Features】  Using high current relay, AC250V 10A DC30V 10A  Independent contact wiring, safe and reliable  Standard interface, can be extended on various development boards  With fixing screw holes for easy installation  Suitable for various platforms such as 51 / AVR / AVR / ARM Module description: 1. This module complies with international safety standards, and there are isolation slots in the control area and the load area; 2. Adopt double-sided FR-4 circuit board design and high-end SMT process production; 3. Controlled by genuine relay; 4.With relay action indication, it will be on when it is on, but not on when it is off; 5. When there is a low-level signal at the signal input terminal, the common terminal and the normally open terminal will conduct; 6. The relay can directly control various equipment and loads; 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. Module interface: 1. VCC: Connect to 5V power positive pole 2. GND: connect to the negative pole of 5V power supply 3. IN1-IN4: signal trigger terminal, active low Relay output: 12-wire interface, all interfaces can be directly connected and led out, which is convenient for users 1. NO1--NO4: relay normally open interface, the relay is suspended before pull-in, shorted to COM after pull-in 2.COM1--COM4 relay common interface 3. NC1--NC4: normally closed interface of relay, short-circuited with COM before pull-in, and left floating after pull-in Before purchase: 1. All the goods are in stock and we will dispatch immediately if we receive the order. 2.Please read the item description, if you have any question, do not hesitate to contact us. 3.Use the vouchers for more saving. Shipment： 1.1-2 days to ship(except for the pro-order item) After purchase: 1.If you are satisfied，please give us 5 stars praise. 2.Please contact us before you are going to give us bad review. We are helpful and will solve the problems. if you receive a defect item,please contact us at once with item picture or video #5V #12V #4 Channel #Relay #Module #Shield #for #Arduino #ARM #PIC #AVR #DSP #Electronic #with #optocoupler #Relay #Output #4 #way #Relay