The main frequency 433MHz and 315MHz are the 1527 chip frequencies.
Encoding chip EV1527:
There are two decoding methods:
Using decoding chip TDH6300 hardware decoding, using single-chip software decoding.
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The EV1527 is a CMOS designed and manufactured learning code encoding chip that can be pre-burned internal code and decoded by software.
The internal code has a total of 20 bits and can pre-burn 1 million internal code combinations, greatly reducing the probability of using coding duplication.
The common remote control data form is usually 1527 and 2262; The main frequency is usually 433MHz and 315MHz
Encoded in NRZ format
Transmission rate: about 1Kb\/s
Wide duty cycle: 1000us, narrow duty cycle: 300us
The chip has a frequency of 433Mhz