Our digital timers provide a cost effective means to measure elapsed time in one of two standard modes of operation. Some specific applications supported by our large digital numeric timers are count up, count down, elapsed time, cycle timers, lap timers, and takt timers. Like all products, you get a quality display in a rugged industrial enclosure, accompanied by expert technical support. With your choice of display color (standard red, optional green, yellow or tricolor in 4" discrete only) and digit sizes ranging from 3.3" to 12", digital timers have the flexibility you require to serve your demanding industrial timer applications. Use our Digital Timers Selection Guide to see which series of digital timers is the right choice for your application.

Digital Timers Selection Guide

Series	87 Series Digital Timers	77 Series Digital Timers
Digit Heights	4" Solid Segment Digit 4" Discrete Digit 6" Discrete Digit 8" Discrete Digit 12" Discrete Digit	3.3" Discrete Digit
Viewing Distance (Recommended/ Maximum)	4" Solid Segment - 100' / 140' 4" Discrete - 120' / 160' 6" Discrete - 180' / 240' 8" Discrete - 240' / 320' 12" Discrete - 360' / 480'	3.3" Discrete - 100' / 120'
Number of Digits	2, 3, 4, 6, 8 or 12 digit (Optional colons for 4 and 6 digit timers)	2, 3, 4, 5 or 6 digit (Optional colons for 4 and 6 digit timers)
Display Color	Standard red, optional green, yellow or tricolor (Tricolor available for 4" discrete digit only)	Standard red, optional green or yellow
Display Technology	Discrete LED (Solid segment available in 4" size digit only)	Discrete LED
Timing Units	See 87/705 Elapsed Timer section.	See 77/705 Elapsed Timer section.
Supports Preset	Yes (Set with a PC using our FREE Display-Pro® 4 Windows® programming utility or by the 87/003 Hand Held Terminal)	No
Communication Port	RS-232 (optional RS-422/RS-485)	None
Programmable Operation	Yes (Through DIP switch selection or PC using our FREE Display-Pro® 4 Windows® programming utility)	No (Factory programmed)
Mounting Options	Hang Mount	Stand Alone or optional Panel Mount
Power Requirements	120/220 VAC ±15% 50/60Hz	Standard 120 VAC ±15% 50/60Hz or optional 24 VDC ±15%
Cost	See 87 Series Displays/Pricing 4" discrete 4 digit $533 4" discrete 6 digit $641	Starting at $434 for a 2 digit elapsed timer. (Add $30 for each additional digit.) 4 digit elapsed timer for only $494

87 Series Digital Timers

87 Series Digital Timers

87/705 Digital Elapsed Timer
The 87/705 Digital Elapsed Timer is the most powerful of our large digital timers. Standard features include your choice of 4", 6", 8" and 12" tall digits in a 7-segment formation and features a set of inputs consisting of 2 timer control inputs (jumper selectable sink or source) plus reset. Simply accumulate elapsed time or time up or down from preset values. DIP switches allow the user to select from one of many popular pre-programmed modes of operation including a selection for display format. Time in fractional or unit seconds, minutes, hours, or even days, with ten millisecond resolution. Displays can be ordered in a clock format (with colons) or standard format. Available DIP switch selectable display formats are as follows. (Other display formats are achieved by using our FREE Display-Pro® 4 Windows® programming utility.)

• Seconds
• Seconds down to tenths of seconds
• Seconds down to hundredths of seconds
• Minutes and seconds (with optional colon installed)
• Minutes and seconds down to tenths of seconds (with optional colon installed)
• Minutes and seconds down to hundredths of seconds (with optional colon installed)
• Minutes
• Minutes down to tenths of minutes
• Minutes down to hundredths of minutes
• Hours and minutes (with optional colon installed)
• Hours, minutes and seconds (with optional colons installed)
• Hours and minutes down to tenths of minutes (with optional colon installed)
• Hours
• Hours down to tenths of hours
• Hours down to hundredths of hours
• Days

87/705 Custom Operation
Custom modes of operation are possible using our FREE Display-Pro® 4 Windows® programming utility for 87 Series units. The list below defines some of the operational characteristics that can be programmed with a PC using our Display-Pro® 4 Windows® programming utility. Contact for specifics at info@digital-displays.com.

• Color Changes - Display changes color in a tricolor display when a process variable such as time reaches a preset value or as the display scrolls through a sequence of display items.
• Define Range Restrictions - Define the minimum and maximum allowable display value and take action if a limit is reached such as stop, flash the display value or flash a predefined string.
• Define an Address - An address is defined for networking applications.
• Define Inputs - Define an active level for each individual input and debounce time.
• Preset and Trigger - Unit takes special action if a preset value is reached such as activating a relay, flashing the display value, reloading a predefined initial value, stop, change color for tricolor displays, and/or transmit a predefined string.

More Information on 87 Series Displays

77 Series Digital Timers
The 77 Series is the most economical of our large digital timers. Standard units feature 3.3" tall digits in a 7-segment formation and include standard sinking type inputs (sourcing optional) to enable timing plus a reset. An optional regulated output voltage of 5 or 12 VDC can be provided for auxiliary use.

77 Series Digital Timers

77/705 Digital Elapsed Timers
The 77/705 Digital Elapsed Timer displays time in one of several display formats available on a 2 to 6 digit display field. The mode of operation is factory set between one of two modes. In mode A the display will accumulate time when the start input (Input A) is held closed, and will hold the time when the start input is open. In mode B the display will accumulate time as soon as a momentary start input (Input A) is applied, and hold that time when a momentary stop input (Input B) is applied. A momentary contact closure to ground on the reset terminal will reset the timer to zero. The following list describes what display formats may be available.

• Seconds (down to tenths possible)
• Minutes and Seconds (with optional colon installed)
• Minutes
• Hours and Minutes (with optional colon installed)
• Hours, Minutes and Seconds (with optional colons installed)
• Hours
• Days

More Information on 77 Series Displays