DC 3V 8MM Cylindrical Suction Solenoid Electromagnet with Spring Push Plunger Compact linear solenoid designed for lowvoltage actuation and reliable push or pull movement. Ideal for DIY fingerprint lock projects and other small mechanical systems that require controlled, repeatable motion. Key benefits Simple lowvoltage operation: Designed for 3V DC power, making it easy to integrate with small power supplies and battery systems. Compact form factor: 8 mm cylindrical body fits into tight spaces and small enclosures used in locks, panels, and miniature mechanisms. Positive mechanical action: Spring plunger provides consistent push or suction movement for locking, latching, or momentary actuation. Easy to integrate: Suitable for microcontroller and electronic control circuits for on demand actuation in custom projects. Durable for repeated use: Built for frequent switching in small actuator roles without complicating your design. Features and specifications Operating voltage: 3V DC Shape and size: Cylindrical body, 8 mm diameter Plunger: Spring push configuration for reliable retraction and extension Function: Electromagnetic suction and push action when energized Typical uses: Direct linear actuation for locking, latching, or triggering mechanisms in compact assemblies Compatibility and installation Designed for lowvoltage electronic control systems and small mechanical assemblies Integrates with general purpose microcontroller and control boards using appropriate driver circuitry or transistor switches Compact footprint allows installation in narrow housings, lock cylinders, or instrument panels Practical use scenarios 1) Fingerprint or electronic door lock: Use as the locking or release actuator in a compact fingerprint lock assembly, providing a controlled push or pull stroke to engage or disengage a latch. 2) Small robotics and automation: Actuate grippers, gates, or mechanical switches on small robots and prototypes where space and power are limited. 3) DIY electronics and model projects: Add momentary motion to models, camera trigger mechanisms, or other hobby projects that require a compact linear actuator. What to consider when using this solenoid Provide a suitable driver or transistor and flyback diode for safe switching in DC circuits. Verify supply can deliver stable 3V under load for consistent actuation. Match mounting dimensions and plunger travel to your mechanical design to ensure correct engagement. This solenoid offers a practical, compact solution for small actuation needs where lowvoltage operation, confined space, and repeatable push or suction action are required.