VCC voltage module operating voltage and good performance filtering Strong influence on antenna module reception, preferably connected to the 1/4 wavelength of the antenna, typically 50 ohm single conductor The length of the antenna 433M is approximately 17 cm The antenna position also affects the reception of the module, installation, the antenna as far as possible from the shielding, high pressure and interference source The frequency used for reception, decoding and oscillation resistance should match the transmitter
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