China ODM Suppliers RS485 to 3-Channel 485 Output Multi-Channel Converter MODBUS Distributor SM701-A (B) Factory

The SM701-A (B) Intelligent Multiplexer is an advanced product developed in China utilizing ARM microprocessor technology and specialized chips, backed by extensive practical experience. Designed specifically for industrial applications, this multiplexer boasts high reliability and stability, making it an ideal choice for various operational needs. Equipped with two standard RS485 interfaces, the SM701-A (B) is perfect for seamless data communication, As a trusted supplier of industrial integration solutions, we have ensured that the SM701-A (B) intelligent multiplexer meets rigorous standards for temperature range, vibration resistance, electromagnetic compatibility, and interface diversity. This thoughtful design guarantees stable operation even in harsh environments, providing high-quality assurance for your equipment. Choose our factory to benefit from cutting-edge technology and dependable performance in your industrial applications

Product Description

Product Specifications

  • Convert one RS485 or RS232 interface into two RS485 interfaces seamlessly.
  • Full support for both standard and non-standard MODBUS_RTU protocol transmissions.
  • Standard RS485/RS232 interface for direct communication with computers or industrial servers.
  • Supports high-capacity architecture with multiple collectors or PCs.
  • Configurable communication parameters including baud rate, check bit, and stop bit for versatile instrument access.
  • Integrated power-off memory function ensures parameters are retained without resetting after power loss.

Product Features

  • Compact Design: Shell dimensions are 96 mm (L) × 80 mm (W) × 25 mm (H).
  • Wide Operating Range: Working temperature spans from -20 ℃ to +80 ℃.
  • Environment Tolerance: Handles relative humidity from 10% to 80%.
  • Power Requirements: DC 12 ~ 24V input; ripple < 200 mA; requires at least 100mA supply.

Technical Parameters

Physical Dimensions 71mm × 52 mm × 22 mm
Operation Ambient Temperature -20℃ ~ +80℃
Relative Humidity Range 10% ~ 80%
Input Voltage DC 12 ~ 24V

Frequently Asked Questions

How many interfaces can this device convert simultaneously?

This high-efficiency device is designed to convert a single RS485 or RS232 input interface into two independent RS485 output interfaces.

Is the device compatible with the MODBUS RTU protocol?

Yes, it is fully compatible with both standard and non-standard MODBUS_RTU protocol transmissions, ensuring broad industrial application.

What are the specific power supply requirements?

The device requires a DC 12 ~ 24V input. For stable operation, the power ripple should not exceed 200 mA, and the source must provide at least 100mA.

Will I lose my settings if the power goes out?

No. Thanks to the built-in power-off memory function, all baud rates and communication parameters are saved and do not need to be reset after a power failure.

Can this converter operate in extreme temperature environments?

The device is engineered for durability, supporting a reliable working temperature range of -20 ℃ to +80 ℃.

Are the baud rate and stop bit settings adjustable?

Absolutely. You can customize the baud rate, check bit, and stop bit based on the specific requirements of your RS485 or RS232 instruments.

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