UniGuard UT04S User manual

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GPS Integrated Speed Limiter
Technician Manual
UniGuard GPS Speed Governor
Road Speed Limiter for Transportation Safety
Technician Manual version2.3 Model No: UT04S
A Product of UniGuard Technology Limited

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1 Brief Production
GPS integrated speed limiter UT04S is a combination of speed governor and GPS
tracking technology. With GPS and GSM, user can track and monitor their vehicle
real time by both Web and Phone application. With connection of pulse wire, it can
accurately control vehicle driving speed so as to ensure safe driving. The device can
limit vehicle speed without interfering with vehicle engine. With
Packing:
GPS speed limiter 1pc
GPS antenna 1pc
GSM antenna 1pc
8 pin Wire 1pc
Sticker 1pc

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2 GPS speed limiter Features
1 Speed Limiter
Enforce to limit the speed of your vehicle if preset maximum speed
2 Tamper proof
Maximum speed is 40km/h if maximum speed is tampered or sensor is cut.
3 Download data
Data can be retrieved by connecting device to computer via CDC data port
4 Portable Printer
Violations can be printed out for the last one-hour driving. Portable printer prevents
drivers from printing
Overspeed, Power tamper, Signal wire tamper and GPS antenna tamper violations
can be printed
5 Violations alarm
All violations will be transmitted to platform, printed by printer and
6 Over speed alarm
When vehicle reaches 95% of preset speed limit, built-in buzzer shall make sound alarm
to warn driver.
Real time fleet tracking Working power: 2W
Other features:
1 Real time location tracking
2 Remote engine cut off
3 External power cut / Power tamper alarm
4 Vehicle engine ON/OFF status checking
5 GSM blind area location auto uploading to server
6 Remote firmware upgrading via GPRS (OTA)
7 GPS antenna tamper detection

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3 GPS speed limiter Specifications
Name
UT04S GPS Speed Limiter
Weight
191g
Dimension
110*75*30 mm
Working voltage
DC 9V-36V
Backup battery
800mAh 3.7V
Battery working time
12hrs
Working current
42mAh/12V
Standby current
16mA
Charging current
Max < 500mA
Input Fuse
2A
Working power
2W
Working Temp.
-35~80℃
GSM Frequency
850/900/1800/1900 Mhz
Max RF output
33.0dBm±2dBm
Dynamic input range
-15 ~ -102dBm
GPS chipset
Ublox 7
GPS frequency
L1, 1575.42 MHz
GPS accuracy
5 meters at 2D RMS
Interface
1 A/D Port for fuel monitoring
1 COM Interface for data config by PC
1 USB port for Printing
2Port for speed limit
1 Input for speed signal
1 CDC Port to data retrieving
Built in Flash
Store data of last 72hrs, above 5000 points
Built in Buzzer
Sound alarm when speed reaches 95% of set value
Alarm
External power cut, Lower battery, Over speed, Geo-fence
Tracking method
Real time on Web Software and Phone APP
Account level
Unlimited sub account management
Report
Trip report, Speed report, Geo-fence report, Parking report,
Driving Report, Alarm report, Mileage report, Engine Idle report

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4 GPS speed limiter interface

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ACC (Orange): connected to vehicle ACC wire to detect engine ON/OFF
PULSE(Purple): connected to vehicle speed signal wire to detect speed
GND / DC+ (Red and Black): connected to battery positive and ground.
NC (GREEN): 24V/12V to 0V output wire. Normal speed, 24V/12V; Over speed, 0V.
Connection: Cut off fuel pump power wire, connect GREEN wire to the pump side cut
point. (Relay and buzzer are built-in, when speed reaches 95% preset value, beep; 100%
speed reached, built-in relay is activated with continuous beep.
NO (Yellow): 0V to 24V/12V output wire. Normal speed, 0V; Over speed, 24V/12V.
Connection: Connected to the pedal controller Red wire, make pedal controller Brown
and Grey give fixed 0.75V and 0.35V voltage to pedal when over speed. (0.75 and 0.35V
voltage is adjustable.)
Fuel (Grey): connect with fuel sensor signal wire to monitor fuel consumption (Optional)
SIM slot: insert SIM card (Insert Micro-SIM card)
USB Print: Connect device to printer, turn on Printer, printing shall start in few secs.
BAT SW: built-in backup battery switch. (Left: OFF, Right: ON)
LED: Blue for GPS (ON if signal okay), Green for GSM (slow flash if signal okay)
Note: Insulate all the rest wires.
Status
Meaning
Green GSM LED
Fast blinking
GSM initialization
Slow blinking
GPRS online
OFF
Sleep or Non-working
Blue GPS LED
Fast blinking
GPS initialization
ON
GPS Located
OFF
Sleep or Non-working

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5 SMS Command List
Usage
Command
Comment or Reply
To send command, Password command must be sent first
Check Location
<CXWZ,>
Replay Google map link
Restart device
<RES=0,>
Check setup and
firmware version
<CXIP,>
<P,APN=etc.com,MTN=20208103731,SLM=T,
MIP=www.gpspos.net:8800,BIP=www.gpspos.n
et:8800,0X,VER=TM-STACL/EA2AS-
TMKJG04P2 Sep 28 2020/21:07:58,>
Check status
<CXEI,>
Power:ON
Bat:10%
GPRS:ONLINE%
GPS:OFF%
ACC:OFF%
GSM:31
GPS:10
TIME:5/180
VER:PLUSE%
OIL:2.3
TCX:10.20
VSET:80
Check IMEI
<CXPI,>
<IMEI=867717047303731…,>
Set GPRS interval
<RPT=30,>
ACC ON GPRS interval. Unit is second
<NPT=5,>
ACC OFF GPRS interval. Unit is minute.
APN setup
<APN=CMNET,>
Set IP and Port
<MIP=www.gpspos.net:8800,>
Speed limit
<MSP=80,>
XX=0 to 220 unit is KM/H (Default 80)
Pulse Calibration
PCS,1;
Used to calibrate limiter pulse speed.
Alarm Phone No.
ARN:TEL;
ARN:15012401234;
PPK setup
PPK,XXX;
PPK,2000; No reply.
Power ON/OFF
interval setup
TC:25,50;
No reply. 25 is ON time, 50 is OFF time. Unit is
0.1s. Default is TC:0.0;

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6 External Optional accessory connection
1 Mechanical actuator: Limiter NC ( GREEN)connect with actuator Green signal wire.
2 Solenoid valve (12V or 24V): Limiter NC ( GREEN) connect with solenoid valve PIN1.
3 Pedal controller: Connect limiter NO (YELLOW) wire with controller Red wire.
Controller black wire connect to Ground. (NOTICE: Please follow below diagram ONLY.)
Take 24V solenoid valve as an example:
Please connect limiter GREEN wire to
PIN1, connect PIN2 to battery Ground.
PIN3 No need connection. At safe
driving speed, fuel flows through the
valve. If driving speed reaches speed
limit, valve shall stop fuel flow so as to
reduce speed. When speed is below
speed limit, valve shall enable fuel flow
again.
Actuator has 3 wires. Red for battery
Positive+, Yellow for Ground. Green is
signal wire.
Connect limiter GREEN wire to actuator
Green wire, the steel rope shall reach
out around 5CM, disconnect device
Yellow wire, the steel rope shall pull
back around 5CM.
When speed reaches, device Yellow
wire has no power, then actuator pull
back the steel rope.

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Pedal controller installation:
1 Find the vehicle pedal harness, it is composed of 6 wires, 2 wire is the signal wires, 2
wire is power wire, 2 wire is ground wire. Start the vehicle, step on the pedal, make
vehicle at idle state, voltage at signal wire shall change.
2 Cut off the 2 signal wires, and then connect respectively the pedal controller wire.
Please refer below picture. Red wire connect with speed limiter NO (YEWLLOW) wire

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7 PC config tool
By connection device to computer via 4 PIN COM port, user can setup and read device
details as below.
Limiter serial is device ID, please do not change it.
Usage:
1 Connect device with to computer, choose the right COM (here is COM3)
2 Fill in data except Limiter serial
3 Click Setup to config
4 Click Read to read config data