Mini Surface Door Contact LED Door Sensor Switch Ir Sensor Door Switch for Leds 12V/24V Sensor Switch Non-Contact
2,If the LED light is always on after the wire is connected, the switch cannot be controlled.The reasons are as follows:
a.The positive and negative poles are reversed;
b.The input and output are reversed;
c.The working voltage does not match
Solutions:
1. First determine whether the working voltage of the driver power supply is DC12V
2. Check whether the positive and negative poles are connected reversely.
3. Check whether the input and output are connected reversely.
Function:
Door trigger sensor :Activated by Door. After correctly connected this sensor with your power supply and LED lights, when you open the door, this door-open-switch will turn on the LED lights automatically. When you close the door, this door-open-switch will turn off the LED light immediately


A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A:Sample needs 7-10 days, mass production time based on order quantity.
Q3. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-7 days to arrive. Airline and sea shipping also optional.
Q4. How to proceed an order for led light?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.
Q5. Is it OK to print my logo on led light product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
Q6: Do you offer guarantee for the products?
A: Yes, we offer 2 year warranty to our products.
Q7: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less
than 0.2%.
Secondly, during the guarantee period, we will send new lights with new order for small quantity. we can discuss the solution including re-call according to real situation.
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