The Schneider Electric ZB2BW064120V is a light module assembly designed for emergency stop bases. It features two normally closed contact blocks with screw clamp connectors, making it straightforward to install and maintain. This unit operates at 120 V and 60 Hz, compatible with both AC and DC power supplies. An incandescent bulb is included, providing clear visual indication when the emergency stop is engaged. This reliable component is available through BSP Automation, offering a practical solution for safety circuits in industrial environments.