Product Name：Holyiot-21052-nRF52820 Module

Model: Holyiot-21052
Chip: Nordic nRF52820
Size: 15 * 9.2 * 2mm
Antenna: Ceramic Antenna
Bluetooth Version: 5.3
Communication Distance: 0 ～ 250m
TX Power：-20dBm ～ +8dBm
Transmission speed: 2Mbps / 1Mbps / 125kbps / 250kbps
Processor: 64MHz Arm Cortex-M4
Storage size: 256KB Flash + 32KB RAM
Communication Protocol: Bluetooth Low Energy / Bluetooth mesh / Thread / Zigbee / 802.15.4 / ANT / 2.4GHz proprietary
Authentication: FCC / CE / Rohs