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Instrumentation

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Color Vehicle Instruments

Model 840
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Model 840

Serial Data Display

FEATURES

See a 360° view of the 840 at:

curtisinstruments.com/360view

▶ Available with “Spy” or CANopen communication protocols allows use 

with broad range of controllers. 

▶ Attractive, easy-to-read, 8 character dot matrix Liquid Crystal Display 

enhances the look of any vehicle.

▶ Two display versions available: 

▶ Three LEDs: Green to indicate that hour meter is being displayed; Amber 

to indicate that battery state-of-charge is being displayed; and Red to 

indicate that a fault has occurred.

▶ Six LEDs: 3 Green, 1 Yellow and 1 Red to indicate battery state-of-charge; 

and 1 Red to indicate that a fault has occurred.

▶ Standard models display information from Curtis motor controllers 

including hours of use, battery state of charge and error/diagnostic 

messages.

▶ Interfaces directly to Curtis motor controllers and displays various 

system parameters.

▶ Molded-in rear Molex style connector provides a low-cost, rugged and 

reliable installation.

▶ Front sealed (IP65) for use in harsh environments.

Options:

▶ Heater version available for freezer applications (heater needs to be 

powered by +24 or +36 VDC).

▶ Backlighting for reading in low-lit environments.

▶ 6 o’clock or 12 o’clock viewing angles.

Curtis Model 840 integrates seamlessly with Curtis motor controllers and displays critical vehicle 

parameters such as battery state-of-charge, operating hours and service/maintenance status. 

Easily readable and available in 3 LED or 6 LED configurations, Model 840 can communicate with 

Curtis motor controllers using both the “Spy” and CANopen formats.
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Model 840

Serial Data Display

SPECIFICATIONS

Display

8-character, alphanumeric, dot-matrix LCD with 

optional backlighting.

Operating Voltage Range

015R = 12.0 to 15.0 VDC

024R = 18.0 to 30.0 VDC

Operating Temp. Range

–10°C to +70°C (Standard Model)

–40°C to +70°C (Freezer Model)

Storage Temp. Range

–40°C to +70°C

Shock & Vibration

Meets SAE J 1378 (Jul 98)

Enclosure Protection

IP65 (Face), IP40 (Rear)

Molex 8-pin Mating Information

Connector: 39-01-2085

Terminal (18–24 AWG): 39-00-0039

Terminal (16 AWG): 39-00-0078

Regulatory Approvals

UL, CE, RoHs

MODEL ENCODEMENT

Model Housing Operating 

Voltage

Temperature 

Rating Backlighting Input LED # Logo

840 R 015R S N A 101 O

015R = 12VDC S = –10aC to +70aC N = No B/L A = Spy 101 = 3 LED, 

12 o’clock LCD O = Curtis

024R = 24VDC 

(CAN version 

only)

F = –40aC to +70aC B = Backlit C = CAN 102 = 6 LED, 

12 o’clock LCD N = No Logo

103 = 3 LED, 

6 o’clock LCD

104 = 6 LED, 

6 o’clock LCD

OPERATING CURRENT

15V Models 24V Models

Signal Name Typical (mA) Max. (mA) Typical (mA) Max. (mA)

B+ Heater (+24V) 133 180 133 180

B+ Heater (+36V) 141 190 141 190

PWRIN (no backlight) 26 39 26 39

PWRIN (w/backlight) 43 66 43 66
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Model 840

Serial Data Display

is a trademark of Curtis Instruments, Inc. Specifications subject to change without notice ©2015 Curtis Instruments, Inc. 50102 REV F 10/15

WARRANTY Two year limited warranty from time of delivery.

DIMENSIONS mm

43.6

MAX.

8.9 MAX.

57.8

MAX.

42.5

MAX.

51.8

MAX.

8 5

4 1

LABEL

"U"CLAMP FOR .03 TO .25

PANEL THICKNESS

BLACK BEZEL

58.4

MAX

CURTIS LOGO OR

CUSTOM LOGO

(IF REQUIRED)

LED1

SERVICE INDICATOR

(RED LED)

LED2

BDI INDICATOR

(YELLOW LED)

LED3

HOURMETER INDICATOR

(GREEN LED)

LCD 1

8 ALPHA-NUMERIC

CHARACTER, DOT-MATRIX

LCD DISPLAY

CONNECTOR PINOUT

NOTE: In addition to a “U” clamp and thumbnuts/washers shown in the drawing, individually packed units are 

provided with a mating connector and female pins. Bulk packed units are provided with a “U” clamp and hex 

nuts/washers only.

Pin 

Number

Function

"Spy" Version CAN Version

1 No Connect CAN Hi

2 No Connect CAN Lo

3 B+ (Heater) 24VDC B+ (Heater) 24VDC

4 B+ (Heater) 36VDC B+ (Heater) 36VDC

5 Power In + B+ (Supply)

6 Rx (Receive Data) No Connect

7 No Connect No Connect

8 B– B–