D.T. Systems introduces add-on collar feature to H2O 1800 PLUS Series collars
D.T. Systems has improved their popular line of H20 1800 collars with a new Add-On capability in their remote transmitter. The new system allows dog trainers to expand from a 1-dog system into a 2- or 3- dog unit simply by purchasing additional Add-On Collar units. Now instead of having to buy a whole new system when […]