Dear Michelle, The products in the pdf do not suit my requirement. I need a 2.4 Ghz transceiver with low power consumption and with a non breakable range of minimum 80 Mtrs. I also need to adjust frequency band so that its possible to use multiple radios in the same place with out interfering each others frequency. Thanks, Best regards, Pradeep 9096576936 pradeep sonawane<pradeep.sonawane.pune@gmail.com> 希望对福友有用~~~