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Smart Control
for a Connected World

RUI EN SI Electronics Shenzhen Co., Ltd. is a leading developer and manufacturer of intelligent wireless control systems, including 4G controllers, GSM sockets, LTE switches, and IoT sensors with mobile app integration for industrial and residential automation.

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Innovating Wireless Control Since Shenzhen

RUI EN SI Electronics Shenzhen Co., Ltd. is located in China's coastal technology hub — Shenzhen. We are a modern science and technology enterprise integrating development, electronic product design, production, and sales.

Our core expertise lies in intelligent wireless control sockets, smart switches, and advanced electronic control systems. With years of experience, we proudly serve global clients through OEM and ODM projects, delivering reliable, scalable, and secure remote control solutions.

  • 4G/LTE & GSM Remote Control Systems
  • Mobile App & SMS-Based Automation
  • OEM/ODM Customization Available
  • Global Compliance & Export Ready
Factory and R&D Center

Our Product Lines

From GSM sockets to 4G LTE controllers, our range delivers seamless remote control via mobile apps, SMS, and cloud platforms.

SC4-GSM GSM Socket

SC4-GSM Socket

Dial & SMS control, remote switching via GSM network

  • • Dual-mode: Call & SMS activation
  • • Compact design for home/industrial use
  • • Reliable 2G GSM connectivity
SC1-GSM-T/TVC Socket

SC1-GSM-T/TVC Socket

16A GSM socket with APP & SMS control

  • • High-load 16A capacity
  • • Mobile app + SMS dual control
  • • Ideal for HVAC, lighting, pumps
SM8-WLTE-EA&EC 4G Controller

SM8-WLTE-EA&EC

Advanced 4G LTE controller with 8 relays

  • • Full 4G LTE network support
  • • 8-channel relay output
  • • Industrial-grade durability
SM4-WLTE-EA&EC 4G Controller

SM4-WLTE-EA&EC

Compact 4G controller with 4 relays

  • • LTE Cat-1 / 4G connectivity
  • • 4 independent relay channels
  • • Low power consumption
KL2-GSM-T/TC Controller

KL2-GSM-T/TC

GSM-based dual-channel controller

  • • SMS & call control
  • • Dual relay outputs
  • • Waterproof housing available
CL8-GSM-N/NC Sensor Controller

CL8-GSM-N/NC

8-relay GSM sensor controller

  • • Integrates with door, water, fire sensors
  • • 8 relay outputs (NO/NC)
  • • Real-time alert notifications
WiFi Network Series

WiFi / Ethernet Series

Smart control via local network or cloud

  • • Dual-band WiFi & LAN support
  • • MQTT, HTTP, TCP protocols
  • • Compatible with Alexa & Google Home
Diagnosis Card

Diagnosis Card

Testing & debugging tool for control systems

  • • Real-time signal monitoring
  • • Fault detection & logging
  • • Essential for R&D and maintenance

Why Choose RUI EN SI?

We combine innovation, reliability, and global support to deliver smart control solutions that scale.

Reliable Connectivity

Our 4G, GSM, and WiFi controllers ensure stable remote access even in low-signal environments.

OEM/ODM Support

Custom firmware, branding, and hardware modifications tailored to your project needs.

Global Compliance

Products meet international standards for CE, FCC, RoHS, and are ready for export.

10+
Years Experience
50+
Countries Served
1M+
Units Shipped
99.8%
Uptime Reliability

Frequently Asked Questions

What networks do your controllers support?

Our product lines support 4G LTE, 2G GSM, WiFi, and Ethernet. We offer region-specific models for global compatibility.

Can I control devices via mobile app?

Yes, many of our GSM and 4G controllers support dedicated mobile apps for iOS and Android, enabling real-time monitoring and control.

Do you offer custom firmware or branding?

Absolutely. We specialize in OEM and ODM projects, offering custom firmware, UI/UX, packaging, and logo printing.

Are your products certified for international markets?

Yes, our products comply with CE, FCC, RoHS, and other international standards, ensuring smooth customs clearance and legal operation.

Get in Touch

Reach out for product inquiries, OEM/ODM collaboration, or technical support.

Contact Information

  • Name: Mr. Hong
  • Phone: +86-0755-29017605
  • Mobile/WhatsApp: +8618923490206
  • Email: 1376392209@qq.com
  • Fax: +86-0755-29002803
  • QQ: 1376392209
  • Address: Building C, Jianjin Industrial Park, Donghuan 2nd Road, Longhua District, Shenzhen, Guangdong, China

Connect With Us

We respond to all inquiries within 24 hours. For immediate support, contact us via WhatsApp or email.

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