Model: 810 Battery: 9V battery ( without battery) Overview This device is powered by a standard 9V battery. The battery is not included in the shipment. Key benefits Portable power source: Operates without a wall outlet, enabling use in locations with limited power access. Simple operation: Easy to power on by inserting a 9V battery and replacing it when needed. Widely available batteries: Uses common 9V batteries, making replacements convenient and inexpensive. Compatibility and power Power source: Standard 9V batteries Replacementable energy: Battery can be swapped to extend use Size and materials Size and construction materials are not specified in the provided details For exact dimensions and materials, please consult the packaging or user manual Performance No performance specifications are provided in the current description Designed to operate when powered by a 9V battery Use scenarios 1) Classroom or workshop demonstrations that require a portable 9V power source 2) Field service or on site testing where a compact, battery powered device is advantageous 3) DIY electronics projects that rely on a portable 9V battery supply