The 11SX21-T is a type of snap-action basic switch with a pin plunger actuator manufactured by Honeywell. It has an electrical rating of 250 VAC 5A, and is suitable for applications that require rapid switching and reliable performance. The switch is designed to be used in a variety of applications including lighting control, electrical motor control, and security systems. The 11SX21-T is made from high-quality materials and is tested to international safety standards. It is durable, reliable, and capable of withstanding a wide range of environmental conditions.