This expansion kit plus 3502 FC gateway is a must-have for anyone in need of reliable vibration measurements. The kit is designed for use with the FLUKE 3561/3502 FC vibration sensor, ensuring accurate and precise readings every time. With its compact design and easy-to-use interface, this kit is perfect for both industrial and commercial applications. Whether you're a professional in the business and industrial sector or simply looking for a reliable test meter and detector, this expansion kit plus 3502 FC gateway is the perfect choice. Invest in your vibration measurement needs today with this top-quality Fluke product.