The Notifier NBG-12 Series Pull Station is a fire alarm initiation device that allows manual activation of the fire alarm system. It typically consists of a red or yellow manual-pull handle or lever, which when activated, sends a signal to the fire alarm control panel to initiate an alarm. The NBG-12 series is designed for use in fire alarm systems and is commonly used in commercial, industrial, and residential buildings. The product is known for its durability and reliability, and it meets industry standards for fire alarm systems.