Sell rolling code wireless remote controller

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Application: wireless key-entry , door lock , window , home security and industrial machines. switches, Car key fob and so on.

Model Name: RC-4A-01
Product description: Rolling code technology. 315Mhz-433MHz selectable.

Remote control range:100M

About rolling code :
 Rolling Code Transmitter/Receiver Set, generates new code each time you push the button, these codes never to be repeated.
 Beat "code grabber", nobody can steal your code again.
 99.99% works with most brands of garage door openers.
 Ideal replacement for older or obsolete models.
 Electronic scanners "code grabber" cannot duplicate the operating code.
 Offers home security at affordable cost.
 Easy to install & program.
 Works as a secondary receiver (both original existing receiver and 838 receiver will work simultaneously)
 Two button transmitter operates two or more garage doors.
 Additional receiver sold separately.
 12V alkaline battery included.