SOLID STATE DIGITAL
METER MODULES
37.6
(1.48)
38.6
(1.52)
Applications
These models offer a variety of functions, sizes,
voltages and customizable options to fit most
applications. Ideal for OEMs, contract manu-
facturers, and panel makers for monitoring
equipment usage, scheduling maintenance,
warranty validation, rental/leasing use and
more. Used extensively in industrial, agricultural,
military & specialty vehicles, as well as applica-
tions such as: vending machines, medical &
office equipment, fuel pumps, and consumer
products.
33.0 MAX
(1.30)
D E S C R I P T I O N
Features
• Selection - hour meters, counters, odometers,
maintenance monitors and more.
• Solid State Circuitry - no moving parts to wear
out. Silent operation and years of rugged &
reliable operation.
• Precision - faster response, more precise and
easier to read than electromechanical meters.
• Crisp, clean readouts - high-contrast
5 & 7mm LCD displays.
• Versatility - compact module designs with
high quality components to minimize space.
• AC/DC Configurations - wide range of oper-
ating voltages & noise protection.
• OEM Compatibility - an unparalleled selec-
tion of power compatibility, design configura-
tions and functionality for OEM custom
designs, panel makers and contract manu-
facturers.
• Distinctive Icons - clear indicators for hour
meter/timer activation and display modes.
• Backlighting - available on all models (see
model coding chart or consult factory).
• Power-up LCD Function Test - displays all 8’s
for 1 sec at power-up (models 700-703
only).
• EEPROM memory – nonvolatile, retention of
data for as much as 25 yrs.+ without power.
• Manufactured under ISO 9001 Certified
Quality Management System
Curtis Solid-State Module Assemblies
are designed for OEM applications.
Curtis offers a wide selection of
miniature AC & DC meter assembly
modules for PC board mounting
applications.
700 – 703: Single-function 6-digit
display for Counter or Hour Meter
configurations.
708 & 721: Dual channel, 6 & 7-digit
display for Maintenance/Hour Meter
or Trip Odometer configurations.
720: Single channel 7-digit
Odometer configuration.
WA R R A N T Y
Two Year Limited Warranty
(see terms of sale for specifics)
2
Model Coding Assembly Modules 700, 701, 703
700
Model
Number
P
Digit
Height
N
Reset Control
Options
-
0
Functions
0
Voltage
0
Reset/Backlight
Configurations
(1)
700
(6-digit)
Hour Meter
P
- 5mm
digits
P7
(2)
- 7mm
digits
R
- Wired Reset
N
- No Reset
0
- AC/DC
(700 only)
1
- DC only with
wired Enable
for Hour/Count
(701&703 only)
2
- AC/DC with
wired Enable
(701&703 only)
0
- 5-12 VDC nom (4.75-15 abs)
6-12 VAC nom (5-15 abs)
1
- 12-48 VDC nom (9-60 abs)
20-60 VAC nom (15-75 abs)
2
- 48-150 VDC nom (36-185 abs)
100-230 VAC nom (75-287 abs)
4
- 12 VDC only (9-15 abs)
Backlight Options "H" & "J" only.
0
- No Reset, No Backlight
2
- Reset, No Backlight
H
- Reset, Internal Backlight
(3)
J
- No Reset, Internal Backlight
(3)
4
- Reset, External Backlight
5
- No Reset, External Backlight
701
(6-digit)
Hour Meter
703
(6-digit)
Pulse Counter
NOTE:
(1) All Backlight configurations - require 12 VDC (only) connection to illumination pin.
(2) 7mm models - Backlighting only available as External.
(3) Available only in 5mm & with voltage option 4 only.
Model Coding Assembly Modules 708, 720, 721
708
Model Number (& function)
P
Digit Height
R
Reset Control Options
-xxxx
Sequential Specification
708
(6-digit)
Dual Channel
Maintenance/Hour Meter
720
(7-digit)
Single Channel
Odometer
721
(7-digit)
Dual Channel
Odometer/Trip Odometer
All Models
P
- 5mm digits
Model 708/721
R
- Wired Reset
for Maintenance
or Trip Display
Consult Curtis for: display format,
voltages, connection termination,
backlighting, pre-scaling and
programming options.
Model 720
R
- Wired Reset
3
Module Assembly Specifications
Display
6-digit, 5 or 7 mm high
Dual-Channel 6-digit, 5 mm high
7-digit, 5 mm high
Dual-Channel 7-digit, 5 mm high
Range & Resolution
Hour Meters
Maintenance
Counters
Odometers
Trip
Accuracy
99,999.9 hrs.
3,999.9 hrs.
999,999 counts
999,999.9 increments
9,999,999
999.9
(Models 700, 701, 703)
(Model 708)
Model 720)
(Model 721)
(Models 700, 701, 708)
(Model 708/2nd Channel)
(Model 703)
(Models 720, 721)
(Model 720) optional resolution
(Model 721/2nd Channel)
(Models 700, 701, 708)
(Model 703)
(Model 720, 721)
Hour Meters ± 0.1%
Counters ± 1 count
Odometers ±1 increment
Humidity
Operating Temperature
Storage Temperature
95% Non-condensing at 38°C
-40°C to + 85°C
-50°C to + 85°C
Operating Frequency (AC units)
48 to 440 Hz abs.
Memory
Main power must be applied for 5 sec to activate memory (with no loss of time/counts).
EEPROM-Data retention 25+ years without power present.
Counter
Maintenance Monitor
Odometer
Trip/Odometer
Model 703 - 500 Hz max, 50% duty cycle (1ms low, min, between consecutive highs).
Models 701, 708 - Power must be applied for 0.5 sec, min, to accumulate time.
Model 720 - Varies depending on model configuration (consult factory).
Model 721 - 500 Hz max, 50% duty cycle (1ms low, min, between consecutive highs).
Input Signal (DC Only)
Input Signal (AC/DC)
Hour Meter
Counter
All Models
Models 700, 701, 703
Model 708
Model 720
Model 721
Models 701, 708 - Power must be applied for 0.5 sec, min, to accumulate time.
Model 703 - 1 Hz max, 50% duty cycle (500ms low, min, between consecutive highs).
Main power must be applied for a minimum of 0.5 sec. prior to reset signal.
6ms, min, at operating voltage.
Maintenance 2 or 4 sec, factory programmed; hour meter not resetable.
70ms min at operating voltage.
Trip channel 2 or 4 sec, factory programmed; odometer is not resetable.
Note: Max Reset frequency is 150Hz for AC models.
Reset
Notes:
1. All modules are supplied with critical components exposed. If the module is being used in an environment other
than specified, the user must take precautions to package the module to provide adequate protection.
2. For proper mechanical support, all module pins should be soldered to the PC-board.
3. To prevent heat damage to components, module face should be 10-20mm minimum away from PC-board when
flow soldered.
4
Current Consumption: (mA max)
Operating Voltage
at Power Terminals
External or Non -
Backlight Models
5 - 12 VDC (@ 5 V)
12 - 48 VDC (@ 12 V)
48 - 150 VDC (@ 48 V)
100 - 230 VAC (@ 120 V)
100 - 230 VAC (@ 230 V)
12 VDC (only)
9-15 VDC (@12 V)
700, 701, 703
(5mm)
0.5
0.8
0.8
1.0
2.0
35
30
700, 701, 703
(7mm)
0.5
0.8
0.8
1.0
2.0
N/A
35
708, 721
(5mm)
N/A
1.0
N/A
N/A
N/A
N/A
35
Internal Backlight Models
At Illumination Pin
External Backlight Models
Module Dimensions: mm (inches)
Models 700, 701, 703 - 5mm Digits
Non-Backlight
2.0 (.08)
P
N
15.0
(0.59)
.8 (.03)
9.0
(.35)
31.0 (1.22)
25.0 (.98)
COMPONENT SIDE
14.0 18.0
(.55) (.71)
I
7.7
(.30)
15.4
(.61)
R
2.0 (.01)
28.0 (1.10)
32.0 (1.26)
.80 (.03)
TYP 4X
3.6 (.14)
MAX COMP
HEIGHT
4.7 (.19)
Backlight
35.6 (1.40)
28.00 (1.10)
±
0.25
P
N
3.8
(.15)
15.0
(0.59)
2.0 (.08)
31.0 (1.40)
0.80
(.03)
9.0
(.35)
25.0 (.98)
18.0
(.71) 14.00
(.55)
7.00 (.28)
L
14.8
6.60 (.26) (.58)
9.0 (.35)
R
I
0.80(.03)
TYP. (5X)
3.5 (.14)
MAX COMP
HEIGHT
8.4
(.33)
Note: Standard pin lengths are shown. Optional lengths are available.
5
Module Dimensions: mm (inches) cont.
Models 700, 701, 703 - 7mm Digits
33.0
(1.30)
1.6 (.06)
P
N
31.5
(1.24)
L
10.9
(.43)
21.8
(.86)
I
R
1.57 (.06)
TYP 5X
11.1
(.44)
25.4
(1.00)
8.8 18.5
(.35) (.73)
5.3
(.21)
27.9
(1.10)
1.8
(.07)
3.8 (.15)
MAX
COMP
HEIGHT
37.6
(1.48)
38.6
(1.52)
16.9 (.66)
Model 708
Model 721
1.8
(.07)
1.9
(.08)
43.2
(1.70)
39.6
(1.56)
25.0
(.98)
0.8
(.03)
32.0
(1.26)
25.0
(.98)
R1.8 (.07)
TYP 4 PLACES
18.5
(.73)
22.4
(.88)
0.8
(.03)
TYP 5 PLACES
9.6 19.2
(.38) (.76)
3.6
(.14)
MAX
COMP
HEIGHT
8.4
(.33)
6
Note: Standard pin lengths are shown. Optional lengths are available.
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