DURTORONGO (দূরতরঙ্গ)

Next-generation wireless Musical calling bell designed for challenging environments where traditional calling systems fail. Using advanced long-distance communication technology, the device has been successfully tested to transmit signals across nine floors, penetrating walls, concrete structures, and industrial machinery.

This system is specifically designed for challenging environments like factories, hospitals, schools, high-rise buildings, and underground areas. When every other bell gives up, DurTorongo keeps ringing—offering a crucial communication lifeline for safety, service, or alert needs.

Unrivaled Performance & Reliability: 

• Extreme Range: Guaranteed instant ring more than 1 km in open field conditions. 
• Deep Penetration: Tested and proven to transmit straight through 11+ floors of concrete, steel, and machinery, including signals traveling between basement garages and rooftop areas. 
• Zero Infrastructure: Works autonomously with no wiring, no internet connection, and absolutely no monthly fees.

Key Features:

Our product has two parts, one is the wireless button part and the other is the bell part.

•    1 button → multiple bells
•    Multiple buttons → 1 bell
•    Multiple buttons → multiple bells
•    Custom melody for each button Adjustable tones