NIUNIU Product Description 1 Real wireless remote control electronic fence. 2 The remote control distance is large. With the transmitter as the center, the maximum remote control radius is 500 meters. 3. The signal strength of the transmitter is steplessly adjustable from 0 to100, corresponding to a receiving distance of 20 to 500 meters. 4 receivers are waterproof, rechargeable, economical and durable. 5. After the dog exceeds the set activity range, the receiver it wears will automatically start the training function,and the first warning will be given. Then perform electrostatic stimulation punishment to remind the dog to return to the safe area. 6. One transmitter can support an unlimited number of receivers to work simultaneously without interfering with eachother. 7. The transmitter has a digital display, which visually displays the current signal strength level. 8. The code operation is simple and the function setting is quick. Special reminder: Please fix the transmitter 1.5 meters away from the ground,without metal walls, so as not to interfere with the wireless signal and affect the remote control distance. Suitable for 1 dog Packing list: 1*receiver and 1*transmitter Specifications: European regulations Shipping quantity: 1 set Package Contents: Only the above package content, other products are not included. Size: 6.5*3.9*3.2CM (Reminder: The size is measured manually, please allow 1-2cm measurement error) color: White (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)