The QH11121-DAT1-4F is a d-sub female connectors manufactured by Foxconn. It is a through-hole connector designed for quick and reliable data transmission. It has four pins with a 4 mm pitch and a high retention force to ensure secure connections. The connectors are RoHS-compliant and come in 9, 15, and 25-pin variations. The connectors are specially designed for use in digital and analog applications. They feature a robust design that is also resistant to shock and vibration, making them an ideal choice for high-reliability applications. The QH11121-DAT1-4F is designed to meet the requirements of industrial control, data transmission, robotics, mechatronics, medical and computing.