Dogtra ARC or 1900S Handsfree Controller KitThe HANDSFREE Remote Controller can be paired to the type of correction of your choice, amongst Nick or Constant stimulation and Pager vibration. You will need to use the transmitter to select the stimulation level. The HANDS FREE Remote Controller and transmitter have a range of 33 feet. The transmitter and receiver have a range of 3 4 mile. The HANDSFREE KIT is compatible with either 1900S receiver or ARC receiver, but does NOT include the receiver.