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This module is manufactured by Ai-Thinker with good quality and inspection before shipping, so the price cannot be compared with the brands floating on the market.
The 2.4GHz RF Receiver Transmitter Module Si24R1 NF-02-PA Ai-Thinker has the main IC is Si24R1, which is a fully compatible and equivalent replacement for the NRF24L01+PA module with a power amplifier for a transmission distance of up to 1000m in ideal conditions (according to the manufacturer's specifications).
The 2.4GHz RF Receiver Transmitter Module Si24R1 NF-02-PA Ai-Thinker has a compact design that makes it easy to integrate into circuit designs, the module is designed and calibrated by Ai-Thinker to achieve the highest power and transmission distance, in addition, the module also has good component and workmanship quality, so it has a high durability and stable operation capability.