Datasheet | Bk2461

The One-Liner: The BK2461 is a 2.4 GHz Transceiver + 8051 MCU designed for one job: screaming a signal over a mile away while running on a coin cell.

The BK2461 is ugly, the documentation is painful, and the registers are cryptic. But if you need to send a "Open the gate" command from 1.2 km away on a CR2032 battery? There is nothing better. bk2461 datasheet

// 3. Set to MAX POWER SPI_Write(REG6, 0x00); The One-Liner: The BK2461 is a 2

// 5. Fire! GPIO_High(CE); delay_us(10); GPIO_Low(CE); the documentation is painful

Want the actual register map? Go download the raw datasheet. But now you know where the bodies are buried.