I think I have a bad batch of HC-12 radio modules. (FIXED) | Electronics Forum (Circuits, Projects and Microcontrollers)
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Amazon.com: HiLetgo HC-12 433Mhz SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna : Electronics
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Amazon.com: HiLetgo HC-12 433Mhz SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna : Electronics
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433Mhz HC-12 SI4463 Wireless Serial Port Microcontroller Module 1000m Antenna Replace Bluetooth | Walmart Canada
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