Module introduction:
1. Maximum load AC 250V/10A, DC 30V/10A.
2. Using patch optocoupler isolation, stable performance.
3. The working voltage of the module is 3V, 5V, 12V and 24V.
4. Red is the power indicator light, green is the relay work indicator light.
5. Select the high level or low level trigger through the jumper cap.
6. There are 4 bolt holes with a diameter of 3.5mm, a module length of 133mm, a width of 63mm and a height of 18mm.
7. The interface design is simple and convenient, and the interface can be directly led out through the terminal.

Input
1. VDD: Connect to the positive pole of the power supply (selected according to the relay model, 3V, 5V, 12V, 24V)
2. GND: Connect to the negative pole of the power supply
3. IN1- IN8: 1-8 way relay control signal input port;
Output
1. COM1-COM8: 1-8 relay common terminal
2. NO1-NO8: 1-8 relays are normally open. The relays are disconnected from the COM of the respective channels before the relay is closed, and shorted after the relay is closed.
3. NC1- NC8: 1-8 relays are normally closed, the relays are short-circuited with the COM of each channel before switching on, and disconnected after switching on.
High and low level trigger selection
1. S1-S8 are in turn high and low level trigger selection of 1-8 relays
2. When the middle terminal is short-circuited with L by a jumper cap, it is a low-level trigger, and when short-circuited with H, it is a high-level trigger.

Silk screen

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the questions which our partner ask most
Q1. How about the quality?
A: We tested 100% before we ship out.We offer 90- 180days quality assurance.
Q2. What is your terms of payment?
A: Order below 10000USD is T/T 100% in advance .
B:Order over 10000USD T/T 50% as deposit to arrange goods.and rest 50% before delivery. 
C:Sample order we can support  

PAYPAL , WERTERN UNION,UnionPay and Alipay.
Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.(defaults EXW for all quotation)
Q4. How about your lead time?
A: There are no lead time for in-stock products.We can ship out within 1-3days after you confirmed the payment.

B:Customized product,we will ship out within our professional invoice show.

Q5. What is your sample policy?
A: Most of products,we can offer free samples;you just need pay the shipping cost.

Q6:Can we ask support if get trouble?

Sure, if there is any quality problems or questions;we could offer technical support or return service .
Q7. Can we return  back the goods?
A: Sure, if you are not satisfied with the quality;you can send the original box back to exchange or refund.You pay the return ship cost.We pay the back cost.

B:If you get wrong item and the mistake made by yourself;we can offer return too.But you should pay the ship cost both.And you can ask us to exchange or refund. 

hot selling pcb module songle 12v dc 8 channel electronic relay control board best quality

hot selling pcb module songle 12v dc 8 channel electronic relay control board best qualityhot selling pcb module songle 12v dc 8 channel electronic relay control board best quality

hot selling pcb module songle 12v dc 8 channel electronic relay control board best quality