Feature:1. Operation: Wireless pet bell is pushed with your dog's nose or a paw to alert you when they want to go outside or come inside; It's simple to use, so your pet will learn fast and stop barking to communicate their needs.2. Pairable: This wireless dog doorbell includes 1 receiver with a far and wide range of 300 meters and 1 transmitters. Receivers and transmitters can be flexibly added or removed according to your need.3. Ringtones: Feel free to explore your options. Change up the ringtone or choose the one that will be most alert to you. And you have 55 different ringtones to choose from on your doggie doorbell.4. Wide Adaptability: Not just for dogs, but also for home doorbells, ideal for pregnant woman, old people, baby, and patient disabled care pager.5. Long Range Operation: Supports a connection range of up to 984 feet. With the ultra long wireless range and strong signal penetration, the doorbell can be freely used in large areas like homes, garden, villa and more.Specification:Item Type: Wireless Pet BellMaterial: ABSWaterproof Rating: IP55Operating Temperature: -30 C - +70 COperating Frequency: 433.92MHz280KHzReceiver Voltage: AC 110-260V with 50-60Hz (wide voltage)Transmitter Battery: 12V 23A alkaline zinc manganese battery 60mAh x 1 (built in)Ringtones: 55 songs to choose fromVolume: 0-110 dB, 5 volume levels, with silent and flash only modesPower Consumption: 0.2WTransmission Distance: 150-300m/492-984ft (barrier free).Package List:1 x Transmitter1 x Receiver1 x Sticker1 x Screw Driver1 x Hanging Rope1 x ManualNote:1. The doorbell receiver can only be used indoors, do not use it outdoors or let it get wet.2. There are no user serviceable parts, please do not repair the transmitter or receiver yourself.3. Avoid placing the transmitter in direct sunlight or rain.4. Only high performance batteries can be used