Technical Specifications Material: Plastic, Receiving Voltage: 85-260V, Receiver Power Consumption: <140mA, Transmitter Power Consumption: <20 mA, Range: 300 meters (straight line), Volume: 0-110dB (4-level adjustment), Operating Frequency: 433.92 MHz, Transmitter Waterproof Rating: IP44, Transmitter Operating Temperature: -20 to 65°C, Receiver Operating Temperature: 20-55°C, Transmitter Life: 200,000 Operations, Clock: Yes, Black. Versatile - The precision of this radio bell will satisfy even the most discerning customers. High-quality wireless doorbell with a range of up to 300M, it can be placed in almost any corner. The device is very useful as a door handle, internal intercom, personal alarm, and more. It is an ideal solution for shops, homes, restaurants, hotels, offices, warehouses, people who need care, and more. Waterproof IP44 - The wireless doorbell is made of high-quality materials, which means that it is not only durable and long-lasting, but also looks great on your property. The wireless doorbell set can even withstand harsh weather conditions. The IP44 waterproof rating means that the external garden bell is waterproof, which is guaranteed by proper sealing on the inside. This category allows for safe outdoor use and provides protection from dust. 38 Melodies to Choose From - The wireless doorbell has up to 38 pleasant melodies and a practical volume control. With the maximum setting of the chime, you can get up to 100 dB of sound intensity. This means that you can easily hear the doorbell from almost any room in the house or apartment. By setting a separate wireless ring signal, it is an ideal choice for pet owners. Simple Design - The battery-free wireless bell is designed in a modern and minimalist style. It comes in an elegant black color that contrasts nicely with the LED display with blue backlighting. It helps you find the doorbell button even after dark, and the light on the wireless doorbell lets you know someone is pressing the button. This is great for those who have small children and don't want to be woken by loud noises. Easy to Install - Installing the battery-free waterproof doorbell kit eliminates the need to hire a renovation team, who would normally need to chisel into the wall to hide the wires. To effectively install this battery-free doorbell, simply choose the right location for the doorbell, glue or screw it to the wall or fence with pins or clips, and then connect the doorbell to the socket - it can't be easier!