SZ Waytronic Security Sf-720 User manual

SZ Waytronic Security Co., Ltd. Service hot line：4008-606-525
-Page 1-
Safety Belt Alarm System
SF-720 V1.00
Instruction Manual

SZ Waytronic Security Co., Ltd. Service hot line：4008-606-525
-Page 2-
1. Product Description
Sf-720 safety belt alarm is a new generation of voice alarm device developed and designed by Shenzhen
Waytronic Security Technology Co., Ltd. It not only has the function of safety belt detection and prompt, but
also has a variety of driving voice prompts. It is widely used in engineering vehicles, special vehicles,
transportation and so on. It is not only easy to install, but also easy to operate.
2. Detailed Parameters
Model
Parameters
SF-720
wire supply
DC 9~60V
Wiring definition
Red wire positive pole, black wire negative pole, brown reverse line,
white left turn, green right turn, yellow 12V output
Size
76X110mm
Color
Black
Working Current
Silent mode≤9MA（DC9V）
Playback mode≤360MA（DC9V）
Audio output
power
8Ω/10W
Volume
soundness
1 meter≤105dB
Protection
degree
IP65
Whether power
on play or not
Yes
Power on respon
se time
≤1 second
Ambient tempera
ture
-30℃～65℃
Relative humidity
10%～95%
Accessories
Certificate of qualification X1
Instruction Manual X1
Fixing screws X3
Relay(Optional)

SZ Waytronic Security Co., Ltd. Service hot line：4008-606-525
-Page 3-
3. Size & Dimension
Figure 3-1 product dimension
4. Operation Instruction
4.1Warning function of not wearing seat belt
There will be prompting of “Please fasten your seat belt”in 2 seconds after power on, and prompting
“Danger, please fasten your seat belt”in cycle if the driver still haven’t fasten the seat belt after 3 seconds
or no prompt if the driver fasten the seat belt.
4.2 Driving reminder function
The red line is the positive pole of the power supply, the black line is the negative pole of the power supply,
the brown line is the reversing trigger, the white line is the left turning prompt line, the green line is the right
turning prompt line, and the yellow line is the 12V signal output. After receiving the 12V (high-level pulse)
voltage signal, any trigger line can prompt reversing, left turning or right turning.
4.3 Vehicle control function
If the safety belt is not fastened properly, the yellow signal line will output 12V control signal. Combined with
relay and other accessories, the ACC of the vehicle can be controlled to achieve the function of fastening the
safety belt before ignition

SZ Waytronic Security Co., Ltd. Service hot line：4008-606-525
-Page 4-
Figure 4-1 product wiring definition diagram
5. After-sales service
◆Please refer to the installation instructions to install the device.
◆If you encounter any problems in the use process, you can call us, and our professional technical
customer service will answer your questions.
◆If you have any comments on our service, you can complain to the dispatcher of the technical
department or the manager of the maintenance department.
◆We are responsible for verifying the problems you complained about. Managers and operators will be
punished to varying degrees. If it is not the responsibility of our company, the relevant personnel will explain to
you and hope you can give us the greatest support.
(yellow) 12V signal line
(red) positive electrode
(broen) reversing trigger line
(white) left turn tips
(green) right turn tips
(black) negative electrode

SZ Waytronic Security Co., Ltd. Service hot line：4008-606-525
-Page 5-
Product warranty card
Product model：Purchase on：
Purchasing company：Company TEL：
Maintenance records：
Maintenance
date
Fault condition
Accessories
replaced
Expense
Maintenance
signature
Warranty notice:
After sales service policy of Shenzhen Waytronic Security Technology Co., Ltd. is described as follows.
Please read it in detail.
◆ The unified warranty period is one year;
◆ The damage caused by force majeure such as man-made damage, self dismantling and natural
disaster is not within the scope of warranty;
◆If it has exceeded the warranty period, the return warranty is a paid warranty, and the replacement
of consumable parts and over guaranteed parts shall be charged with relevant fees
Disclaimers
Shenzhen Waytronic Security Technology Co., Ltd. reserves the right to modify the use information without notifying the customer. The
specifications of the new products will be subject to the latest version of the use information.
Contact Information
400 service hotline：[phone]
Fax：[phone]
Add: 4/F,Building No.11, Fuan Robotics Industrial Park, Dayang Road 90, Fuyong, Baoan, Shenzhen,
518103 Guangdong , China