1 pcs
Delivery Time
3~7 working days
Trade Terms
EXW, FOB Shenzhen, CIF, Door to door.
Payment Terms
T/T, Western Union, PayPal,Wechat,Alipay,Aliexpress
By sea, By air or By express delivery (DHL/UPS/FEDEX/TNT)
Get Latest Price
Get the latest price
Quantity Needed:
I/O: 12DI/12DO
Enterprise Strength
  • Coolmay's comprehensive service system covers from pre-sales to in-sales and after-sales. It guarantees that we can solve consumers' problems in time and protect their legal right.
Company Advantages
1. The design team has been researching Coolmay with innovations, keeping up with the trends.
2. Strict rules in quality inspections has been set up for this product.
3. The optimum performance makes it a distinguished product.
4. This product can add an elegant appeal to a room. It also can reflect people's personalities and tastes in terms of interior decoration.
5. The product contributes to improving feet health. It effectively solves the problems of foot odor, fatigue, and pain during walking.

The device includes functions below :

  • 12DI/12DO, transistor output,

  • RS232, RS485 port

Cutout size77*99mm122*99mm192*99mm277*99mm
InstallationFixed hole installation and DIN-Rail (35mm )
FeaturesSupport interrupt, linear arc interpolation, PID auto-tuning. 32K program capacity, 32K retentive register
I/O levelInput: Passive NPN, public terminal isolated
Transistor output: NPN
Relay output: Normally open dry contact
Digital I/O8DI/8DO12DI/12DO16DI/16DO24DI/24DO18DI/16DO32DI/32DO40DI/40DO
DO typeTransistor(MT) or mixed(2T6R)Relay(MR) or transistor(MT) or mixed(MRT)
(Relay output: max load 5A/ transistor output: max load 500mA)
High speed countingSingle phase 6 channel 60KHz, or 2 AB 60KHz + 1 AB 10KHz, or 2 ABZ 60KHz + 1 AB phase 10 KHz
High speed pulse8 channels, Y0-Y3 is 100KHz, Y4-Y7 is 10KHz
High-speed counting + high-speed pulse < 480KHz
Analog I/ONull6AI/4AO2AI8AI/4AO12AI/8AO16AI/8AO4AI/4AO
AI typeType E/K/S/T/J thermocouple/ PT100/ PT1000/ NTC10K/ NTC50K/ NTC100K/
(optional)0~10V/ 0~5V/ 0-20mA/ 4-20mA

 -5V~5V/ -10V~10V(except for CX3G-16M)
AO type0~10V/ 0-~5V/ 0~20mA/ 4~20mA
(optional)-5~5V/ -10~10V (2DA for 1 minus temperature)
Default COM port1 Mini type B USB port, 1 Rs232(Interface terminal is mouse female port with 8 holes), 2 RS485 ports
OptionalDefault 2 RS485 ports can be customized asDefault 2 RS485 ports can be customized as 1 RS485, 1 RS232,
1 RS485, 1 RS232,CAN (2.0A/B) port is optional
or 1 RS485, 1 CAN (2.0A/B),
or 1 RS232, 1 CAN (2.0A/B)
CX3G-48M can add Ethernet port.
SoftwareCompatible with WORKS 2


Packaging:The products will be under testing for 1-3 days and packed with carton box .

The package will include:

1 set of plc device+cables


By courier, door to door

For samples, the package will be delivered by DHL/UPS/FedEx/EMS express. Usually it will take 3-7 days to your location. 

 Post service

If you are not hurry but need economical delivery, we can go with packet channel. The delivery time depends on your location.

 Air shipping or by sea

If bulk order, the packages will be delivered by air shipping or by ship. 

 As some local customs require specific information for local import, please offer the information if you need the package to be sent to these countries.

India:  PAN or IEC or GST number

Peru: Tax number

Argentina: Tax number

Chile: Tax number

Brazil: CNPJ or CPF number

Bulgaria: Tax number for DHL shipping 


1 How to check the PLC version number?

Major version number: D8001; minor version number: D8101

2. How to download programs for 3G series PLC?

3G series PLC comes with two download ports: mini USB port and RS232 serial port. The mini USB port needs to install the driver:

Download area-PLC software download-USB programming port driver of 3G series PLC & PLC integrated machine

Company qualification:


Company information:

Coolmay Technology is a high-tech enterprise specializing in research and development, our company mainly focus on production of industrial PLC automation products and provision of automation engineering services.The business philosophy of our company is "cooperation, integrity, pragmatism and innovation", we focus on the field of industrial control automation, providing customers with high-quality, low-cost embedded industrial control products, solutions and services. In order to follow the development direction of China's industrial automation market, our company has developed industrial control products which could satisfy market demand and have highly competitive in the industry. Our products include: PLC integrated machine, touch screen, human-machine interface, text display, power module, wireless communication module, temperature control module, amplifier module, frequency converter, smart home series products (smart lock, smart curtains, smart control panel, smart Control system, etc.) and other supporting products.




Company Features
1. Shenzhen Coolmay Technology Co., Ltd. has accumulated a good reputation and image in market.
2. Our company has brought together the right people (highly skilled assemblers and technicians, production engineers, quality engineers, purchasing staff and more). With these people's industry know-how, we are able to create benefits for our customers.
3. The culture of stimulating the vitality of the talent team can ensure the efficiency of Coolmay. Contact! Persist in striving to create for the world is a principle of Coolmay. Contact! Coolmay believes that through unremitting efforts to realize the dream of will finally work out. Contact!




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We produce MODULE ! CUSTOM-MADE module is OK! Our company produce your own board!


  15A DC/DC Buck Adjustable 4-32V 12V to 1.2-32V 5V Converter Step Down Module for laptop computer synchronous rectifier   










Synchronous rectification technology Introduction:

Synchronous rectification is the use of special low-resistance power MOSFET, a rectifier diode instead of a new technology to reduce rectifier losses. It can greatly improve the efficiency DC / DC converter and the absence of the Schottky barrier voltage caused by the dead zone voltage. Power MOSFET are voltage controlled devices, which in turns voltage characteristics of a linear relationship. When done with the power MOSFET rectifier requires a gate voltage must be rectified voltage phase synchronized to complete the rectification, it is known as synchronous rectification. Synchronous rectification is greatly reduced power output rectifier switching losses, thereby improving the conversion efficiency, reducing power itself fever.

Module parameters:

Module Properties: non-isolated step-down module (BUCK) synchronous rectifier

Input voltage: 4-32V Keep voltage margin.

Output voltage:        1.2-32V adjustable (continuously adjustable)

                                         Fixed output 1.2-32V

The minimum differential input and output: 1V

Output Current: 0-15A long natural cooling within 10A, temperature does not exceed 60 degrees, the peak up to 20A. Deration is required at higher ambient temperatures.

Operating temperature: -40 to + 85 degrees

Operating frequency: 150KHz

Conversion efficiency: up to 98% (efficiency of input and output voltage, current, pressure related)

Short circuit protection: YES (limit current 25A) input fuse is 15A

Overtemperature protection: (automatically reduce the output current after overtemperature)

Input Reverse Polarity Protection: None (if necessary, please enter the string into the diode)

Installation: four 3mm screws

Connection: Terminals, solderless, V-IN input, V-OUT output

Module dimensions: length 60mm width 51mm height 22mm



    This module can be applied in the field of blood pressure is higher than the output voltage of the input voltage, such as batteries, power transformers, DIY adjustable power supply, 24V car T of the power supply, automotive LED lights with power, industrial equipment buck, 12V switch 3.3 V, 12V turn 5V, 24V turn 5V, 24V switch 12V and so on. 





1.Ship to whole world : DHL , UPS, FEDEX, EMS, HKPOST, SGPOST,SWPOST


2.Lead time:2days. If we don't have stock at that time, it takes 2-4days to produce it.







   *Paypal: total sum *0.041
   *Escrow: total sum *0.05
   *TT: $28-$45(according to amount)
   *Western union: $0





    3 Months, if the qualieam will slove the quality problems for you.

1.If you test the products and it doesn't work, pls keep it and send it to us in 


   1 month, we will send the good one to you with the following order.


2.If the product is already used by you, then no warranty.


3.If the product is broken by man-made, then no warranty.






Packaging & Shipping

 packing details: the products are packed with wraping film or polywood for customers' requirement as below:





very good,i like it
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