Joytopiaminds Miniature Brass DC Generator Model for Steam Engine Internal Combustion Engine, 12V 1A Generator with Digital Voltmeter

⚡【Dual-Purpose Power Module】Functions as a 12V 1A DC generator when paired with steam/internal combustion engines, or operates as a motor with 12V input. Features a digital voltmeter to monitor real-time voltage output (<30V) 【Premium Brass Construction】Electrophoretic-painted green brass ensures durability and a retro-industrial aesthetic. Compact 8.1x4.1x5.1cm design with a 3.2mm spindle for seamless integration into model builds 【High-Speed Compatibility】Supports 1000-5000rpm rotation, ideal for upgrading DIY engine models. Perfect for demonstrating energy conversion principles in STEM projects or enhancing realism in hobbyist setups 【Decorative & Functional】Combines exquisite craftsmanship with practicality. Displays live voltage data while adding vintage charm to workshops, desks, or engine dioramas 【Easy Installation】Ready-to-use accessory for model enthusiasts aged 16+. Includes generator unit only (engine not included)-pair with compatible models for hands-on learning or creative customization