The PCZ-521.3 programmable time switch is produced by the manufacturer F&F. It is an electronic part that is designed to provide reliable time switching applications. It features a range of 24 hours or 7 days, has a single pole double throw (SPDT) switch, and operates on a voltage range of 24 to 264 VAC. This programmable time switch is suitable for all types of digital timing applications, including industrial automation and control systems. The switch features a digital input on each terminal, allowing for remote programming or control. It is suitable for many different types of equipment, including pumps, fans, motors, and other industrial machinery.