Product Material: Plastic Colour: Black Waterproof Grade: IP55 Working Temperature: -30°C to +70°C Working Distance: 300 m (without barrier) Operating Frequency: 433.92 MHz Volume: 0-110 dB (5 levels adjustable, with mute control) Transmitter Battery: 12 V 23 A alkaline zinc manganese battery (built-in) Receiver Dimensions (L x W x H): 6 x 6 x 1.5 cm Transmitter Dimensions (Diameter x H): 7.8 x 5 cm Package 1 Includes: 1 x Receiver, 1 x Transmitter Package 2 Includes: 1 x Receiver, 2 x Transmitters 1. Easy to Trigger The dog bell can be easily activated by nose or paw with simple touch or push on the touchpad. No pressing required. Suitable for small or large dogs. The response time between activations is approximately 20 seconds. 2. Easy Installation All dog doorbells for potty training are wireless. Attach the transmitter to a door, floor, or wall using 3M double-sided adhesive tape, even on wood surfaces, and place it where needed. Simply plug the receiver into a power outlet. Setup is straightforward and user-friendly. 3. Adjustable Sound and Volume The intelligent dog doorbell offers 55 ringtone options and 5 volume levels ranging from 0 dB to 110 dB. Volume can be set to 0 dB (mute) when silent operation is required. 4. 300 m Wireless Range The pet doorbell includes a transmitter and receiver that pair easily. Provides stable signal transmission with strong anti-interference performance. 5. IP55 Waterproof Design Equipped with a built-in waterproof sealing ring to protect internal components from water and dust, extending product lifespan. Operates normally in rainy conditions.