ATC 355C-351-A-30-PX Shawnee II Digital GP Reset Panel Mounted Timer, 99.99 Seconds, 120/60 Voltage and Frequency with Display (On Delay), Basic Plug-in/Standard Unit

A compact version of the 335 Timer, the ATC 355 is its exact functional duplicate, packaged in a 72mm DIB-Size housing, it occupies 40% less panel space and costs proportionately less. Modern production and assembly techniques have all but eliminated hand wiring, enhancing the reliability and life expectancy of the 355. The Shawnee 355 operates on a digital logic circuit with three main elements: a clock which uses utility line frequency of 50 or 60 Hz as its time base; a read-only-memory (ROM) whose output is set by the timer's digital setting number wheels; and a comparator that continuously examine the outputs of the clock and ROM.

• Because it has no moving parts in its logic circuits, its life expectancy is practically unlimited
• The Shawnee indicating timer provides cycle progress indication on a four-digit display located immediately above the digital setting number wheels
• Features true plug-in design and can be replaced in seconds without disturbing the housing or disconnecting the wiring
• Covers the overall span of 0.01 SEC to 999.9 MIN in two field-convertible ranges