The transmitter emits a harmless radio signal in a radius between 20ft to 850ft(selectable) around itself and the signal is detected by the collar. Besides, you can switch the transmitter to Dog Training Mode to train your dog via beep/vibration/shock modes.
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Electric Fence Polywire Wear Resistant Practical Convenient Sturdy Multipurpose 400M for Dogs Fence Pasture Sheep Cattle
Aliexpress UK
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High Voltage Pulse Electric Fence Animal Horse Cattle Poultry Farm Shepherd Dog Alarm Animal Husbandry Tool Anti Beast Insulator
Aliexpress UK
Boundary radius range: 1. Level: 40m/ 131ft; Level 2: 120m/ 394ft; Level 3: 160m/ 525ft; Level 4: 220m/ 722ft. -When installing you should put the transmitter high enough and open it wide enough to make sure that there is no barrier of fence debris between the transmitter and receiver (outdoor unobstructed use).
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【2500FT Remote and IPX7 Waterproof】 Super Far remote dog training collar range up to 2500 feet(875 yards), easily train your dog in the backyard, park. This dog shock collar with IPX7 waterproof function.
eBay
The transmitter emits a harmless radio signal in a radius between 20ft to 850ft(selectable) around itself and the signal is detected by the collar. Besides, you can switch the transmitter to Dog Training Mode to train your dog via beep/vibration/shock modes.
eBay
It has a novel appearance and comfortable hand feeling. Convenient, not only can better protect your pet's safety, but also allow pets to get better training within a limited range. This is great! Product looks amazing.
eBay
Sound mode: It can emit beep sound. Install the conductive silicone cap to protect dog.
eBay
This dog fence system has a heavy-duty wire to establish an invisible boundary for dogs and sends a harmless signal from the transmitter to the collar receiver. If the dog gets close to the boundary-warning zone, it will emit a warning sound, while issue a mild shock if the dog continues moving closer to the boundary, the system will.
eBay