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、Applicable Models: This replacement cartridge is for Officejet Pro 251dw, 276dw, 8100, 8600, 8610, 8620, 8630, 8640, 8650, 8660, 8615, 8616, 8625 printers. 2、Large Capacity: Each black cartridge can print up to 1000 pages and each color cartridge can print up to 700 pages for high capacity and greater durability. 3、Colorfast Printing: Quality ink provides crisp text and graphics that won't fade for years, perfect for hospitals, schools, financial firms, etc. 4、Easy Installation: The cartridge is compact and easy to install, users do not need to tear off the exit film by themselves, the film will automatically poke through back after the machine. 5、Wide Application: This cartridge is perfect for the printing needs of hospitals, schools, government, trade companies, and financial companies. Specification: Item Type: Printer Ink Cartridge Material: ABS Model: For HP 950BK 951C M Y Color: BK, C, M, Y Applicable Scene: Print photos, test papers, documents Applicable Region: Worldwide Applicable Models: Suitable for Officejet Pro 251dw, 276dw, 8100, 8600, 8610, 8620, 8630, 8640, 8650, 8660, 8615, 8616, 8625 Package List: 4 x Printer Ink Cartridge Note: Do not tear off the exit film, the top will automatically poke through. Package List 4 x Printer Ink Cartridge