In this paper, we presented a low-cost direct-sequence spread-spectrum scheme for data communication over the 2.4GHz ISM band. A prototype peer to peer system has been developed for evaluation, which include complete short range microwave transceivers. Data rate up to 1Mbps has been achieved. The RF front end is developed with commercially available MMIC chip set. The data-link MAC controller is realized with commercial DSP chip, which highly improves the system versatility in various applications. The prototype system has the potential to support point-to-multi-point connections, it can be easily expanded to a compact low cost data exchange network without any modification in system hardware.