• Expand an 1850 PLUS Series to a 2 dog system by ordering this "Add on" collar
• 3 Beeper Modes: Run/Point Mode, Point Only Mode, and Locate
• 16 levels of Momentary or Continuous Stimulation
• Powered by a rechargeable Ni-MH battery system - charger included
• Maxx-Range Internal Collar Antenna System
• Orange Collar Strap - Fits small to large dogs
• Completely waterproof collar

By ordering this Add-On collar you can expand a DT Systems 1850 PLUS unit to a 2 dog unit.  Maximum of 2 collars can be controlled from 1 transmitter.

The all new H2O 1850 PLUS series is a great new collar system that is expandable to a 2 dog system and can be used in a wide variety of applications. This fully waterproof unit covers both basic and advanced training needs for both professionals and novice users alike. Whether you are knee-deep in cold icy waters or knee-deep in tall grass on a dry sunny day, the H2O is designed with the harshest environments in mind. All H2O 1850 PLUS expandable two dog series models have an 1800 yard (1 mile) range and come with completely waterproof and rechargeable (Ni-MH batteries) transmitter and collar units. Nick and Continuous Stimulations come standard on every model in the H2O 1800 series line-up. The H2O comes with a Beeper/Locator. Features 1800 Yard (1 Mile) Range 16 Levels of Intensity adjusted from the Transmitter Digital Technology to Maximize Power Maxx-Range™ Internal Collar Antenna System Gentle Touch™ System Extra Mild Stimulation Built-In Safety Shut-Off Rechargeable Ni-MH Battery System Completely Waterproof Transmitters and Collars Beeper/Locator