Compact DC electronic starter designed for small motor applications and hobby projects. Precise dimensions and low voltage range make it easy to integrate into battery or solar powered systems. Key features and benefits Size and shaft details for easy fit: 25 x 20 mm body, shaft diameter 1.8 mm, shaft length 8.5 mm for secure coupling and mounting. Wide lowvoltage compatibility: rated DC3V6V so it can be powered by 2 to 3 standard batteries or a small solar panel, enabling portable and off grid use. Ready for multiple projects: sold as Package 10Pcs 140 Mini DC electronic starter, ideal for repairs, multiunit builds, classroom kits, or spare parts. Simple integration: standard shaft dimensions and compact footprint simplify mechanical coupling and enclosure installation. Practical and reliable for small loads: suitable for driving small mechanisms, toy drives, and demonstration setups where compact, lowvoltage rotation is needed. Guarantee Service: guarantee and reliable customer service within a 24 hour time support. Function and compatibility Function: provides compact DC motor rotation for starter, drive, or demonstration purposes in lowvoltage systems. Compatibility: works with 3V to 6V systems and typical battery configurations using 2 or 3 cells, as well as small photovoltaic panels that deliver within the rated voltage range. Mechanical compatibility: 1.8 mm shaft diameter fits common micro couplers and fittings; 8.5 mm shaft length gives enough engagement for secure mounting. Typical applications Hobby and model making: power small wheels, gears, or propellers in RC toys, scale models, and mechanical prototypes. Educational and demonstration kits: use in STEM lessons, physics experiments, and solar power demonstrations where lowvoltage motors are required. Small DIY projects and repairs: drive small pumps, mixers, or custom mechanisms where compact size and simple battery or solar power are preferred. What is included 10Pcs 140 Mini DC electronic starter, each with the specifications listed above. Ordering confidence Clear specifications make it straightforward to confirm fit and power requirements before installation. Guarantee and reliable customer service within a 24 hour time support.