Features High Quality 5V 1-Channel Relay Module: This module offers high-quality performance with a 5V power supply and 1-channel bistable self-locking relay, ensuring reliable and efficient . Convenient Trigger Control: Easily activate the relay by clicking the trigger port to pull it in and hold, and click again to disconnect, providing convenient and intuitive control. and Long Service Life: Constructed with high-quality materials, this relay module is and has a long service life, ensuring lasting reliability for your applications. High Accuracy and Strong Stability: With high accuracy and strong stability, this relay module is easy to install and use, delivering and reliable performance for various applications. Safe Low Pulse Trigger: The trigger mode is a low pulse trigger, providing a more convenient and safer for your peace of mind. Features: 1、MAIN PURPOSE: The hand crank generator can generate electricity for various electronic products, used for emergency rechargeable power supply. 2、APPLICABLE SCENES: Applicable to field , investigation, aid , survival training, emergency communication, outdoor tourism, etc. 3、METAL STRUCTURE: The generator shell and handle are made of aluminum alloy, the rocker and button are made of stainless steel, with long service life. 4、BRUSHLESS MOTOR: Adopts 3 phase brushless DC motor, which can generate enough power, with super capacitor, effectively store energy. 5、OTHER ACCESSORIES: Equipped with test clip cable, USB cigarette lighter and voltage conversion cable , the hand generator is easy to operate. Specification: Item Type: Hand Crank Generator Material: Aluminum Alloy, Stainless Steel Capacitance: 3 x 20F Output Power: 3W (5V 0.6A speed 2rps), 4W (5V 0.8A speed 3rps) Package List: 1 x Hand Crank Generator 1 x Test Clip Cable 1 x USB Cigarette Lighter 1 x Voltage Conversion Line Note: betweenbr> Package List 1 x Hand Crank Generator 1 x Test Clip Cable 1 x USB Cigarette Lighter 1 x Voltage Conversion Line