Shenzhen Coolmay Technology Co., Ltd.
                                                                                                           
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20 Years
Since 2006
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Coolmay 4.3inch HMI PLC All-in-One Controller with 64MB RAM and RS485 RS232 for Industrial Automation

Price Negotiable
Price: Negotiable
MOQ: 1 peice
Delivery Time: 3-8 works days
Brand: Coolmay
Product Description
Coolmay 4.3-inch HMI PLC All-in-One Temperature Controller
This integrated PLC controller combines HMI and PLC functionality in a compact unit with 64MB RAM, RS485/RS232 communication, and compatibility with FX2N/FX3U/FX3G automation systems. Ideal for customized industrial control applications.
Product Overview
Coolmay provides a comprehensive PLC application platform for creating high-performance industrial integration control solutions, helping users save time and costs while improving efficiency and corporate competitiveness.
Technical Specifications
General Specifications
Model QM3G-43FH
Dimensions 134×102×34mm
Cutout Size 120×94mm
Input Power 24VDC
Power Consumption 4-6W
HMI Specifications
Display Type 4.3" TFT resistive touch screen
Display Features 60K colors, supports portrait display
Display Size 97×56mm
Resolution 480×272 pixels
RAM 64MB (inquire for historical data storage)
ROM NOR Flash 8MB
CPU 32-bit CPU 408MHz
COM Ports Type-C HMI download port, RS232 port
Software Coolmay TPWorks HMI Programming Software
PLC Specifications
I/O Level Input: Passive NPN, public terminal isolated
Output Types Transistor output: Low level NPN, COM connect to negative
Relay output: Normally open dry contact
DO Load Capacity MT: 2A/point, 4A/4 point COM, 5A/12 point COM
MR: 2A/point, 5A/12 point COM
High-speed Counting Single phase 6 channel 60KHz, or 2 AB 60KHz + 1 AB 10KHz, or 2 ABZ 60KHz + 1 AB phase 10KHz
High-speed Pulse (MT models) 8 channels, Y0-Y3: 100KHz, Y4-Y7: 10KHz
High-speed counting + high-speed pulse < 480KHz
COM Ports 1× TYPE-C, 1× RS232, 1× RS485
Software Compatibility GX Developer 8.86 and GX WORKS 2
Support & Service
  • 18-month warranty (excluding artificial damage)
  • Unlimited technical support via video, phone, or email
  • OEM/ODM supported with MOQ of 200 sets
  • Custom modules and functions available
Product Certification
Coolmay products are fully compliant with CE and RoHS regulations and manufactured under ISO 9001-certified quality management systems.
Coolmay product certifications including CE, RoHS, and ISO 9001 compliance
Application Scenarios
Industrial automation applications of Coolmay PLC HMI integrated controllers
About Coolmay
Founded in March 2006, Coolmay is a premier industrial automation brand serving over 10,000 customers across 200+ countries. With 200+ global professionals including 40+ R&D specialists, we have completed 55,000+ projects and secured 60+ intellectual property rights. Our product range includes PLC, HMI+PLC all-in-one machines, HMI, power supply, servo drives, stepper drives, VFDs, and IoT modules.
Coolmay company overview and manufacturing facilities
Global Partners
Coolmay global partners and distribution network
Industry Exhibitions
Coolmay participation in international industrial exhibitions and trade shows
Payment Methods
We accept secure payment methods including Western Union, WeChat, AliPay, PayPal (where available), and international bank transfers (T/T). All transactions are protected under AliExpress Buyer Protection.
Warranty & After-Sales Service
  • 18-Month Manufacturer Warranty: Covers hardware defects and system malfunctions under normal use
  • Lifetime Technical Support: Remote assistance for configuration, firmware, and integration
  • Returns & Exchanges: Contact us within 3 days of receiving damaged shipments with photo evidence
Contact Information
Reach out for support, documentation, or firmware files. We respond within 24 hours.
WhatsApp: +86 199-2529-1353
WeChat: +86 199-2529-135
Frequently Asked Questions
PLC Transistor and Relay Precautions
The PLC output is common cathode with theoretical rating of 1A (actual use under 500mA). COM wiring is negative, use 24V voltage. No voltage output when used as switch. External relays require external power supply.
Relay contact life: theoretical 300,000 cycles. External load should not exceed 5A. Frequent full load operation may affect service life.
Output Type Selection Guide
MT: Transistor output
MR: Relay output
MRT: Relay-transistor mixed output
Key Differences:
  • Current Load: Transistor max 500mA, Relay max 5A
  • Output Power: Transistor - DC24V only, Relay - DC24V or AC220V
  • Functionality: Use transistor output for pulse driving (stepper motors) or active output switching
  • Recommendation: When both options are available, transistor output is preferred due to no contact life limitations and longer operational lifespan when current limits are observed

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Coolmay Technology Co., Ltd.
Location #902, Block A, Building 4, Software Industry Base, Nanshan District, Shenzhen , China, 518061
Contact Person Sandra

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