ANRIVERSRF CONTROLKNOWLEDGE CATEGORY
Clear explanations of RF frequencies, modulation, coding and wireless range.
A handset LED, a received packet, and a completed machine action prove different things. Learn what one-way and two-way RF control can confirm, how lost replies affect retries, and what to check before approving a feedback design.
A receiver sensitivity figure tells you the weakest signal a radio can decode under stated test conditions. It does not promise a working distance. Here is how to read the dBm number, compare two specifications fairly, and leave enough margin for the real installation.
No. Matching 433 MHz only puts two devices in the same radio band. Modulation, data rate, protocol, code type, enrollment method and command mapping must also match before a remote can operate a receiver.
ASK and FSK can operate on the same nominal frequency yet behave very differently around electrical noise. The modulation, receiver bandwidth, data rate and packet design must be evaluated as one radio link.
A relay’s headline current rating is usually based on a resistive test load. Motors, solenoids, lamps, and other real-world loads can demand far more at startup and are harder on contacts when switched off. Here is a practical way to size and protect a wireless controller.