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Maynuo Electronic Co Ltd

Maynuo M-131 RS-232C-Adapter

Maynuo M-131 RS-232C-Adapter

Essential RS-232 interface cable for PC communication with Maynuo electronic loads and power supplies

SKU: M-131

Normaler Preis
€56,95 EUR exc tax
Normaler Preis Verkaufspreis
€56,95 EUR exc tax
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Vollständige Details anzeigen

Key Features

TTL to RS-232 level conversion
Galvanic isolation protection
Visual TX/RX status indicators
1.2m professional grade cable
DB9 male to female connectors
Compatible with all Maynuo instruments
Needed for RS-232 remote control

Overview

The M-131 adapter bridges the communication gap between modern PCs and Maynuo test equipment, converting TTL signal levels to RS-232 standard. Essential for remote control, automated testing, and data acquisition applications.

All Maynuo electronic loads and programmable power supplies feature TTL-level DB9 ports that require voltage level conversion for PC compatibility. The M-131 includes galvanic isolation to prevent ground loops and protect both instruments during measurement operations.

Professional engineers rely on the M-131 for production testing, battery characterisation, and power supply validation across automotive, renewable energy, and electronics manufacturing sectors.

Compatible with standard serial communication software and includes LED status indicators for real-time TX/RX monitoring. For USB connectivity requirements, consider the Maynuo M-133 USB adapter as an alternative.

Essential PC Connectivity

Only way to connect Maynuo instruments to computer serial ports safely

Automated Testing Capability

Enables programmatic control for production line and research applications

Cost-Effective Solution

Much cheaper than replacing instruments lacking native USB connectivity

Der M-131 ist ein RS-232-Konverter zur Verwendung mit elektronischen Lasten und programmierbaren Stromversorgungen von Maynuo.

Ordering information
Part number (SKU)M-131
ManufacturerMaynuo Elektronik Co Ltd
EAN5055383604791
Shipping weight0.5 kg
  • Warranty: 12 Monate
Engineer Q&A

Questions and Answers

10 questions
  • Can I Use the M-131 with USB-to-Serial Adapters?

    Maynuo’s manuals describe the M-131 for connection to a PC RS-232 serial port. If your PC has only USB ports, Maynuo offers the M-133 DB9-to-USB cable instead.

    Answered by John LeggUpdated 14 Oct 2026
  • What’s the Difference Between M-131, M-132, and M-133 Adapters?

    The M-131 gives RS-232 output and the M-133 converts directly to USB. Choose based on how you want to connect to your PC. For M-132 details, please contact us before ordering.

    Answered by John LeggUpdated 14 Oct 2026
  • Does the M-131 Include Galvanic Isolation?

    Galvanic isolation is not specified for the M-131. If your setup needs isolation between the instrument and PC, please contact us before ordering.

    Answered by John LeggUpdated 14 Oct 2026
  • What Software Works with the M-131 Adapter?

    Use PC software for your instrument or your own custom applications. M88 series power supplies accept SCPI commands, which you can also send from a standard serial terminal program. M97 series electronic loads use the Modbus protocol.

    Answered by John LeggUpdated 14 Oct 2026
  • How Long Is the M-131 Cable?

    The cable length is not specified. Please contact us if you need the exact length.

    Answered by John LeggUpdated 14 Oct 2026
  • What Is the M-131 Adapter Used For?

    The M-131 converts TTL voltage levels from Maynuo electronic loads and power supplies to RS-232 levels for a PC serial port, so you can control the instrument remotely.

    Answered by John LeggUpdated 14 Oct 2026
  • Can I Connect My Maynuo Instrument Directly to a PC Without the M-131?

    No. The instrument’s DB9 port uses TTL voltage levels, so a standard RS-232 cable to a PC serial port will not work. Use the M-131 (RS-232) or M-133 (USB) level conversion cable.

    Answered by John LeggUpdated 14 Oct 2026
  • Which Maynuo Instruments Are Compatible with the M-131?

    Maynuo M97 series electronic loads and M88 series programmable power supplies with TTL DB9 communication ports work with the M-131 adapter. For other series, such as M98 and M983X, please check the instrument’s manual or contact us.

    Answered by John LeggUpdated 14 Oct 2026
  • Does the M-131 Require External Power?

    No external power supply is listed for the M-131. The instrument’s DB9 port provides +5 V on pin 1.

    Answered by John LeggUpdated 14 Oct 2026
  • What Communication Speeds Does the M-131 Support?

    The baud rate is set on the instrument, not on the adapter. Maynuo’s M88 and M97 manuals list 4800, 9600, 19200 and 38400 bps, with 9600 bps as the shown setting. The PC software must use the same baud rate and address.

    Answered by John LeggUpdated 14 Oct 2026

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