The Hengstler Type 499 is a compact, DIN-compatible pneumatic timer designed for precise time control in industrial environments. It operates without the need for a continuous air supply and offers a stationary preset time with selectable ranges from 0.2 to 300 seconds. Available with hose coupler or rapid-fit connectors, it supports easy installation on DIN rails. The ATEX-certified version is suitable for use in potentially explosive atmospheres (zones 1 and 21, category M2 for mining), offering IP55 protection when used with a transparent cover. Its pressure-independent design and reliable performance make it ideal for demanding applications where electrical components are not suitable.