The 78TCSX-4 is an electronic timer relay manufactured by Schneider Electric. It is a multi-function timing device that can be used to precisely control when and how long a motor, solenoid valve, light, etc. is activated, making it ideal for industrial automation applications. The 78TCSX-4 is a versatile timer that can be configured as a delay-on, interval, cyclic, on-delay, off-delay and more, and with its LCD display, 4 push buttons and rotary selector, programming is easy and intuitive. The timer has a 5A SPDT (Normal Open/Normal Close) output relay, can be panel and DIN rail mounted, and is rated for use with up to 250V AC/DC.