Enhance your home security with this wired intercom doorbell, offering convenient two-way audio communication and a remote unlock function. Easy to install with a surface-mounted design, this durable ABS plastic doorbell ensures clear conversations thanks to its superior side tone cancellation. Enjoy reliable performance with an intercom range exceeding 100 metres. Connect using two-core wiring for intercom functionality or four-core wiring for intercom and unlock capabilities. Powered by a 220V AC adapter (outputting 12V DC), this system boasts low power consumption and crystal-clear audio with a frequency response of 300-3400Hz. The indoor unit measures 227x87x45mm, while the compact door unit measures 100x36x73mm. Upgrade your home entry system with this practical and reliable wired intercom doorbell.

• Two-Way Audio & Remote Unlock: Communicate clearly with visitors and unlock the door remotely.
• Extended Range: Enjoy reliable communication over distances of 100+ metres.
• Easy Installation: Surface-mounted design for simple DIY setup.
• Crystal-Clear Audio: Advanced side tone cancellation ensures clear conversations.
• Durable Construction: Made from robust ABS plastic for long-lasting performance.
• Flexible Wiring: Use two-core wiring for intercom or four-core for intercom and unlock.
• Power Supply: 220V AC input, 

Technical Specifications:

• Audio Distortion Rate: >= 50mW
• Frequency Response: 300-3400Hz +/- 3dB
• Working Voltage: DC 12V +/- 10%
• Power Consumption: Static <0.2W, Call Status <2W
• Indoor Unit Size: 227x87x45mm
• Door Unit Size: 100x36x73mm