Xigbee Display and Transmitter - repost

DESIGN AND DEVELOPMENT OF WIRELESS TRANSMITTER AND RECEIVER DISPLAY Need to send data (data stored in XLS format) from a wireless transmitter connected through USB to a PC and the transmitted data (unique to each display) to be displayed on more than one LCD displays with unique ID. The data sent to each display will be different. LCD dot matrix display Approx size 2"(H) X 4"(W) with a Zigbee or RF communication interface. The display should be AA or AAA battery operated and the battery should last at least for a month. Option to send data independently to each display or in bulk to all the displays required. The ID of the receiver display should be of 25 characters and should be programmable. The distance between the transmitter and the Receiver will be between 100 to 250 meter. The character size and font programmable at the Transmitter end.