The Pro 500-2 G2 EXP Two Dog Collar has one black collar strap for the first dog and one red collar strap for the second dog.

To select between the dogs, there is a color coded toggle switch that allows you to move back and forth between dogs 1 and 2.

Each dog's stimulation is independent from the other dog's and you cannot correct both dogs at the same time. You can move back and forth between the dogs quickly at the times when both dogs need corrections. Click here to read my article on using a multi dog system.

The Pro 500 G2 EXP is an extremely versatile remote training collar that is right for any breed of dog and any type of training - from basic obedience to advanced field work.

The Pro 500-2 G2 EXP Two Dog Collar gives you 18 levels of continuous stimulation and 18 levels of momentary stimulation - all instantly selectable from the transmitter.

The Pro 500-2 G2 EXP Two Dog Collar has a toggle switch on the transmitter that allows you to quickly move between momentary and continuous stimulation.

The duration of momentary stimulation is pre-set to only last a fraction of a second. Momentary stays on only briefly no matter how long the button is pressed. To produce a series of momentary corrections, press the momentary button repeatedly.

The trainer controls the timing and duration of continuous stimulation. The stimulation stays on while the transmitter button is depressed. You can make the stimualtion a very quick pulse by pressing and releasing the button, or you can make it a longer correction by pressing and holding the button down.

Use low level continuous stimualtion for training and higer levels for stopping major distractions.

Continuous has a safety "time out" feature that only allows the stimulation to last a maximum of about 9 seconds. If the stimulation times out, restore function by releasing the button and pressing again. In normal use collars do not time out because corrections are far shorter than 9 seconds.

For added versatility, six levels of intensity are available by adjusting a dial on the back of the transmitter. Use low-level continuous stimulation to teach basic commands in the yard. Quickly change to a higher level should your dog be tempted by a strong distraction.

A separate audio tone button comes standard. Activate it with a separate button on the back of the transmitter. Our favorite use of the tone feature is teaching silent commands for working at long distances with your dog.

Note: We use and recommend the Tri-Tronics Pro 100 G2 EXP and the Pro 500 G2 EXP models for "yard work" (obedience)training and any other training where low levels of continuous stimulation are used to reinforce previously taught commands.

The Pro 100 G2 EXP and the Pro 500 G2 EXP models have a "low" and a "medium" button for continuous stimulation (as well as a "high" continuous stimulation button).

The continuous stimulation produced by using the low and medium buttons on the Pro 100 G2 EXP and the Pro 500 G2 EXP is lower than the continuous stimulation levels on the Sport series, Classic 70 G2 EXP, Flyway Special G2 EXP, Upland Special G2 EXP, and Pro 200 G2 EXP. The low and medium continuous stimulation levels on the Pro 100 G2 EXP and Pro 500 G2 EXP are particularly useful with sensitive dogs/breeds.

Now with the new EXP feature, you can purchase the Pro 500 G2 EXP as a two dog unit and add a 3rd dog at any time by purchasing an extra EXP collar. Upgrade when you add more dogs!