RI SHENG's ST-1189E is a series of tactile switches with Surface Mount Design (SMD) RoHS compliant package that are ideal for space-constrained, cost-sensitive applications. These switches are pressure operated, meaning that when pressure is applied to the switch it connects two terminals on the circuit board to close the circuit and complete the connection. These switching solutions are offered in top and side actuation styles, making them ideal for many applications in the industrial, automotive, medical, instrumentation and military markets. They have a long, reliable lifetime and high-level IP67 sealing to meet the needs of space-constrained, cost-sensitive solutions. The ST-1189E series offer long stroke lengths and secure termination on the board with pins up to 0.8 mm thick, as well as high mechanical and electrical durability. These switches are designed to meet industry standards for performance, reliability and durability.