The Elta 149-TCK24 is a 24-hour time clock designed for reliable control of ventilation systems and other timed applications. It operates on a 220 – 240VAC 50Hz supply and features programmable 15-minute captive segments for precise scheduling. This unit supports surface, panel, or DIN rail mounting, making it versatile for a range of installations. A manual override function allows temporary control with automatic return to the set program, while a clear contact status display provides easy monitoring. Rated for fan loads up to 3A.