at89s51加上ptr2000模块实现短距离无线通信，可用在低速率的数据采集或传输系统中。-at89s51 ptr2000 module with a short distance wireless communications, available at low speed data acquisition or transmission systems.

at89s51加上ptr2000模块实现短距离无线通信，可用在低速率的数据采集或传输系统中。-at89s51 ptr2000 module with a short distance wireless communications, available at low speed data acquisition or transmission systems.