Wireless Smart Doorbell EU/UK/US/AU Plug Waterproof by Golonzo

This wireless doorbell boasts a waterproof and dustproof design, compatible with various countries via US, EU, UK, and AU plugs. It supports up to 20 transmitters and 100 receivers, allowing users to assign unique ringtones to each button with a power-off memory function. The receiver's voltage (110-220-240V) enables global use, with a 300-meter open area range, though signals may be obstructed. It offers 5 volume levels (0-110db) with 60 music options and includes a microphone.

• Button capacity: Up to 20 units, Receiver: Up to 100 units
• Multiple buttons per system, each with unique ringtone
• Power-off memory: Resume previous ringtone settings
• Transmitter: No screw chuck, waterproof & dustproof without rubber ring
• Transmitter battery: 23A12V alkaline (not included)
• Receiver voltage: 110-220-240V
• Receiver plugs: US/EU/UK & AU adapters, suitable for most countries
• Receiving range: 300 meters in open area
• Wireless signal: Obstacles may cause loss, more obstacles = more loss
• Receiver volume: 5 levels (mute to 110db), 60 music choices
• Dimensions: Transmitter (75x51x20mm), Receiver (95x65x24mm)