DC12-24V 4 Channel Universal Wireless Relay Remote Controller 

1.Tech Data:
DC 12V 4-Channel Remote Control Switch KL-K400C

2.Working Mode:
1. Momentary: Press remote button A, the corresponding relay on the receiver is on; release button A, the relay is off, the same as others.
2. Toggle: Press remote button A, the corresponding relay on the receiver is on; press button A again, the relay is off, the same as others.
3. Latching: Press remote button A, the relay A is on, B is off; press button B, the replay B is on, A is off.



3.Shipping
1) Express: DHL, FedEx, UPS, TNT, EMS
2) By air
3) By sea
4) By special line
Depends on buyer's requirement

4.FAQ
1) What is your warranty period?
Generally, we provide 1 year warranty for all our products unless otherwise mentioned (some are 2 years)
For DOA (defective on arrival) items, which will be replaced or refund, please inform us within 3 days of arrival, please also keep all components and packing as further checking maybe required, faulty items must be returned for repair or exchange

2) If i don't know how to use the products, what can i do?
Please contact us whenever you need our help, even we are not online
You can write email to us, or contact us by Trademanager, Skype, and other IM tools
We are all very glad to answer your questions

3) What certifications do you have?
Most of our products are approved with CE certification, some are with FCC
If you have any other requirements with certifications, we also would like to help you


5.Our company
Shenzhen Kelvin Electronics company limited is a professional manufacturer of security products with obtaining ISO9001:2000 quality system approval, CE approval and RoHS Directive-compliant certification
Our products mainly include smoke detectors, door sensors, home alarm systems, panic buttons, wireless remote controls (or switches), wireless transceiver modules.