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#280B 4-way 12V relay module supports high and low level trigger relay expansion board development board 4 channel relay module
1. The module uses genuine high-quality relays, the maximum load of the normally open interface: AC 250V / 10A, DC 30V / 10A;
|1. DC +: Connect to the positive pole of the power supply (the voltage is in accordance with the requirements of the relay, and there are 5V, 9V, 12V and 24V options)|
2. DC-: Connect to the negative pole of the power supply
3. IN1-IN4: According to the setting of each channel, the corresponding relay can be controlled to pull in high or low level
There are 12-wire interfaces, all interfaces can be directly connected to lead out, which is convenient for users to use.
|1. NO1--NO4: Normally open interface of the relay, the relay is suspended before being pulled in, and shorted to COM after being pulled in|
2. COM1--COM4 relay common interface
3. NC1--NC4: Normally closed interface of the relay. The relay is short-circuited with COM before pull-in, and hangs up after pull-in.
High and low level trigger selection terminal:
|1.S1-S4 are the high and low level trigger selection of relay No. 1 to No. 4 in turn;|
2. When com and low are short-circuited, the corresponding relay is triggered at low level, and when com and high are shorted, it is triggered at high level
Q1. What is your terms of packing?
A: Generally, our modules are all with Anti-static bag individually wrapped,also can be accepted customized package.
Q2. What is your terms of payment?
A: Full payment. Goods would be shipped in 1-3work days after payment received, finally depends on quantities.
Q3. What is your terms of delivery?
A: Generally EXW,can be according to customer’s requests.
Q4. How about your delivery time?
A: Generally, goods would be shipped in 1-3 work days after payment received, finally depends on order quantities.
Q5. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q6. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.