Wireless Systems for heavy duty indoor and outdoor use  

Long Range 2 to 10 Miles ( 3 to 16 km )  Specs / Order Transmitter   1 Channel base  937101   4 Channel base  937104 2 Channel Portable 937202 4 Channel Portable 937204  Accessories Receiver    1 Channel base 937001    4 Channel base 937004   16 Channel base 937016 Specifications    Applications

   with 9 Feet of Cable