Product descriptionMaterial: plastic + electrical componentColour: whiteWorking temperature: -30 to +70 degrees CelsiusOperating frequency: 433.92 MHz 280 kHz.Receiver voltage: AC 110 ~ 260 V / 50-60 Hz (wide voltage)Waterproof: IP44Receiver size:6.7*2cmTransmitter size: 6.7*2.1cmPackage 1 includes: 1*receiver, 1*transmitterPackage 2 includes: 2*receiver, 1*transmitter1.Easy to use Pet Bell The wireless touch dog bell can help your pet hit the door through the bell instead of pushing the door through claws. The dog only needs to touch the transmitter on the claws or nose, and then the bell will sound. This way your door can be protected from scratches.2.Adjustable volume and songs The 4-speed wireless dog bell from 0 to 110 decibels has a special mute mode that won't disturb your neighborhood. The wireless dog bell has 38 built-in songs you can choose. You can customize the personal bell song and the volume yourself. You can also increase or decrease the number of transmitters connected by simply pairing.3.WeatherproofThe wireless touch dog bell with IP44 waterproof and good heat resistance is not afraid of weather changes. You can set the transmitter to the outside.4.Strong sound penetration The wireless range of the radio emergency bell is up to 300 m outdoors. The wireless touch dog bell ensures the signal is transmitted stable and efficiently. It is ideal for large houses such as villas, apartments, offices, shops, warehouses etc.5.Easy to carryEmergency function The hanging hole transmitter is compact and lightweight, which is convenient to carry. If an emergency occurs, e.g. For example, an intruder in the house, an earthquake, etc., press the panic button to alert the receiver, or disable it to send an emergency signal immediately.