strong>Features: ?Available in On- and Off-Delay ?Timing from 0.1 Seconds to 60 Minutes, Fully Calibrated in Linear Increments ?Oversized Time-Calibrated Adjustment Knobs, Markings Visible from All Angles Make This the Most Practical, Easily-Set Timer Available ?Inherent Transient Immunity ?Operating Voltages Range from 6 to 550 VAC and 12 to 550 VDC with Special Voltages Available ?Available in 2-Pole or 4-Pole Models ?Many Enclosure Options: Explosion Proof, Dust Tight, Water Tight, Hermetically Sealed, NEMA 1 ?Auxiliary Timer and Instantaneous Switches Can Be Added for Greater Switching Flexibility ?Numerous Mounting Options: Surface-Mount, Panel-Mount, Octal Plug-In Mounting ?Options and Accessories: Quick-Connect Terminals, Dial Stops and Transient Protections Module ?Front Terminals — Easy-to-Reach Screw Terminals, All on the Face of the Unit, Clearly Identified ?Module Assembly — Timing Head, Coil Assembly and Switch-Block Are Individual Modules