The Numens 442-003 is a non-addressable visual alarm device that operates with a 24V DC power supply. It is designed to be part of fire detection and alarm systems, providing a visual warning through long-life LEDs. The device is ideal for installations requiring a straightforward alarm notification solution.

This model, specifically a red version, is compatible with both 2-wire and 4-wire systems, and it can work with relay outputs or from an output module in addressable alarm circuit setups. The device activates when the supply voltage is connected, ensuring easy installation and low maintenance. It is also available in models with synchronous operation features​