Product Name：Holyiot-15003-nRF51822+PA Module

Model: Holyiot-15003
Chip: Nordic nRF51822
PA Chip: RFX2401C
Size: 19.8 * 15 * 1.9mm
Antenna: IPX Antenna
Bluetooth Version: 4.2 / 4.0
Communication Distance: 0 ～ 250m
TX Power：0dBm ～ +22dBm
Transmission speed: 2Mbps / 1Mbps / 250kbps
Processor: 32-bit ARM Cortex M0 processor
Storage size: 256/128KB Flash + 32/16KB RAM
Communication Protocol: Bluetooth Low Energy / ANT / 2.4GHz proprietary