K9-400 vs K9-402: Single or Two-Dog Handler Setup
By E-Collar Technologies | Published: 2026-11-05
Category: 比較
Compare the K9-400 single-dog and K9-402 two-dog K9 Handler trainers on range, receiver size, and bungee collar setup to choose the right working dog e-collar.
Quick answer
Choose the K9-400 if you handle one working dog and want the lower-cost single-dog K9 Handler trainer. Choose the K9-402 if you routinely work two dogs and need one system to manage both without buying a second transmitter setup.
The real difference is dog count, not range
Both the K9-400 and K9-402 are built on the same K9 Handler platform: 3/4 mile range, a 2 by 1.5 by 1 inch receiver weighing 2.4 ounces, and COS (control of stimulation) technology for clean stimulation. The K9-402 is the 2-dog version of the K9-400, so the practical decision is whether you need to control one dog or two from the same transmitter.
If you only run one dog, the K9-402 adds a second-dog capability you may never use. If you regularly work two dogs at once, the K9-400 leaves you managing a second system or swapping collars, which is slower in the field.
Bungee collar setup is the same on both models
Both products ship on a 33-inch bungee collar, so the fit and comfort routine does not change between the two. That means your choice should not be driven by collar style; it should be driven by how many dogs you need to handle and your budget.
The bungee collar is designed to keep the receiver positioned comfortably on a working dog, but you still need to check fit on each dog individually. A two-dog setup means two separate fit checks, not one shared adjustment.
Cost trade-off: one system vs two-dog convenience
The K9-400 has a catalog price of USD 135.00, while the K9-402 is USD 200.00. The K9-402 costs more because it controls two dogs from one transmitter, which can be cheaper and simpler than buying two separate single-dog systems.
If you are unsure whether you will ever add a second dog, the K9-400 keeps your initial cost lower. If a second dog is likely soon, the K9-402 avoids buying twice.
Decision trade-offs
- One dog, lowest upfront cost: Pick the K9-400 if you handle one dog and do not expect a second working dog soon; you get the same 3/4 mile range and compact receiver without paying for two-dog control. Confirm your typical working distance is within 3/4 mile before choosing either model.
- Two dogs, one transmitter: Pick the K9-402 if you need to switch between two dogs during the same session; it is the 2-dog version of the K9-400 and avoids juggling two separate systems. Plan two separate bungee collar fit checks, one for each dog.
- Future second dog: If a second dog is likely within a year, compare the K9-402 price against buying a second single-dog setup later; the two-dog model can be the simpler long-term choice. Check current catalog prices before deciding, since pricing can change.
Product facts
- K9-402 2 DOG K9 HANDLER ON 33″ BUNGEE COLLARS: K9-402 is the 2-dog version of the K9-400, with a 3/4 mile range and the smallest rechargeable dog training collar receiver. You get two-dog control from one transmitter while keeping the same compact receiver size on each dog.
K9-402 2 DOG K9 HANDLER ON 33″ BUNGEE COLLARS - K9-400 K9 HANDLER 3/4 MILE TRAINER ON 33″ BUNGEE COLLAR: K9-400 is a 3/4 mile range trainer with a 2 by 1.5 by 1 inch, 2.4-ounce receiver and COS stimulation technology. It provides the same small receiver and clean stimulation for a single dog at a lower catalog price.
K9-400 K9 HANDLER 3/4 MILE TRAINER ON 33″ BUNGEE COLLAR
Which setup fits your work
Best for
- Handlers working a single dog who want the K9 Handler platform at a lower price
- Owners who want a compact 2.4-ounce receiver and 3/4 mile range for one dog
Not for
- Handlers who regularly work two dogs at once and need one transmitter to manage both
- Buyers who expect to add a second working dog soon and want to avoid buying twice
