AVANTEK Wireless Doorbell D-3B – 1300 ft Range, 52 Melodies, Waterproof, LED Flash, 1 Button + 2 Receivers

Reliable, weather-ready doorbell for busy homes and classrooms

Meet the AVANTEK Wireless Doorbell D-3B, a compact system designed to keep you informed wherever you are in your space. With a long-range signal that reaches up to 1300 feet (400 meters), it helps you stay connected even in larger homes, multi-room apartments, or classrooms. The push button and plug-in receivers work together to deliver dependable alerts without overlapping interference with neighbors’ devices.

The transmitter is built to handle real-world conditions. Its IP55-rated chassis is dustproof and waterproof, and it operates across a wide temperature range (-4 °F to 140 °F), so rain, snow, or heat won’t stop the notification from arriving. The device uses a low-power lithium battery designed for long life, with a typical lifespan up to three years under normal use, reducing frequent battery changes and maintenance worries.

Crystal-clear sound and customizable chimes

Inside, a 40 mm stereo speaker delivers rich, crisp audio across a suite of 52 melodies. You can navigate through the collection with Next/Previous controls and fine-tune the volume across five levels, topping out at a powerful 115 dB. The memory function saves your last melody and volume after a power outage, so you won’t have to reset settings every time the power flickers.

Simple setup with scalable coverage

The kit includes one doorbell push button (transmitter) plus two plug-in receivers, ready to install in your entryway, living space, or classroom. Setup is straightforward: mount the transmitter and plug in the receivers. If you need more coverage, additional AVANTEK RB-1/CR-1 receivers can be added, expanding the system to cover larger areas without overlapping interference with neighbors’ equipment.

Use cases that fit your routine

Whether you’re welcoming guests in a cozy home, guiding students in a classroom, or coordinating routines in a busy office, this doorbell offers audible and visual cues. The LED flash provides an extra notification layer for louder environments, and the compact design blends with your décor while delivering dependable alerts.

In short, AVANTEK’s D-3B doorbell pairs reliable range with robust weather resistance, a wide sound palette, and easy expandability. It invites you to customize your alerts, so you can respond quickly when someone arrives—without making promises about outcomes.