There are two Innotek Ultrasmart Fences available. The Innotek IUC-4100 Ultrasmart Pet fenceing System is a fence only, and the Innotek IUC-5100 Ultrasmart Contain ‘N’ Train Pet Fencing System is a combined fence and 150 yard remote trainer.
Each of these products come with one collar, the IUC-4225 for the IUC-4100 Ultrasmart Fence, and the IUC-5225 for the IUC-5100 Ultrasmart Contain ‘N’ Train. The IUC-4225 will work as a fence collar only on both systems, and the IUC-5225 will work with both the fence and the remote.
So, why would you buy one over the other?
- I want to add a dog to my Ultrasmart IUC-5100 Contain ‘N’ Train for the fence only
You only need to get the IUC-4225 collar - I want to add a dog to my IUC-5100 Ultrasmart Contain ‘N’ Train for both the fence and the remote trainer
The collar you need is the IUC-5225 - I want to add a dog to my IUC-4100 Ultrasmart Fencing System
An IUC-4225 collar is perfect
In a nutshell, if you have an IUC-5100 Ultrasmart Contain ‘N’ Train, you can add a dog just to the fence with the IUC-4225 Ultrasmart Collar, or to the fence and trainer with the IUC-5225 Ultrasmart Collar. FYI: The IUC-5100 has a two dog capacity for the remote trainer.
If you have an IUC-4100 Ultrasmart Pet Fencing System, you should only purchase an IUC-4225 Collar. FYI: The IUC-5225 would work with the fence, but it would additional cost for no benefit over the IUC-4225.
Remember all of our receiver collars ship from stock, two-day air to any location in the continental United States at no extra charge!

