The module scheme uses a low-power chip IN310/IN618, which has a user-defined proprietary protocol stack and integrates a 2.4 GHz RF transceiver radio system and MCU system. The IN310 integrates a powerful 32-bit ARMCortex-M4FCPU with floating point unit processing capabilities. It can operate at various clock frequencies, up to 64 MHz. This chip has a built-in 256KB ROM, up to 1MB of Flash memory, and up to 96KB of high-density SRAM. The chip has excellent RF performance and takes into account the design concept of ultra-low power consumption, making it very suitable for battery powered products and other applications with limited power consumption. The IN130 has a well-designed hardware security engine that supports ECC encryption and decryption algorithms. The IN618 is an upgraded version of the IN310. It inherits the low power consumption performance of the IN318 and provides group transceiver modes such as 2-drag 1 and 4-drag 1.

The specific data of the scheme are as follows
2.400-2.483GHz ISM band/GFSK modulation
Frequency response 20-20KHZ, performance-to-noise ratio 85db, distortion degree 0.5%
The minimum delay time for audio data is 12.5 ms
Support for adjustable audio delay, suitable for surround speakers
Supports 2-to-1, 4-to-1 mode
Effective launch distance: 30M
Reserved GPIO, UART, and I2S interfaces to support software online burning and resetting
Receiving sensitivity: – 97.5 dBm @ 1Mbps; – 94.5 dBm @ 2Mbps
Emission peak current: 4.1 ma
Receiving peak current: 5mA
Frequency band support: 2360MHz~2400MHz
Sampling: 36K
Power supply: built-in DCDC converter 1.8 - 3.6V input
Operating temperature: - 40~85 ° C
Suitable for: low power consumption, multi to one transceiver mode, such as microphone, intercom