Review on 📡 5 Pairs 433MHz RF Transmitter and Receiver Module Board Link Kit: Compatible with Ar-duino/Arm/McU/Raspberry Pi/Wireless DIY by Kevin Folsom

Run through all 5 transmitters and receivers. The range was terrible even with 12v on the transmitter and following the instructions to add antennas. Even when working within inches of each other, they can be quite inconsistent. I kept the same circuit but replaced it with a superheterodyne RF transmitter and RioRand 433MHz receiver. It worked immediately with long range and no antenna. That is trash. Don't waste money and time.