3Pcs Geekcreit? 12V 4CH Channel 433Mhz Wireless Remote Control Switch With 2 TransimitterNote: If you need more transmitter, please search This product does not supply any instructions, please reference the description. Features: It is a learning code wireless remote control switch (receiver), the output way working way can be changed as you like, it is easy to match the transmitter. It has 4 Relays which can make the equipment turn or reverse, on off and so on come true. The volume is small and the performance is stable and reliable,
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3Pcs Geekcreit? 12V 4CH Channel 433Mhz Wireless Remote Control Switch With 2 Transimitter