Industrial 4-ch RS485 DC Detection Module Modbus RTU DIN Rail

Industrial 4-ch RS485 DC Detection Module Modbus RTU DIN Rail

$28.9

Brand：SpotPear

SKU：020310700000

Date：2026-03-16 13:57

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Modbus RTU DC Monitor

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Industrial 4-Ch DC Monitoring Module, 16-bit High-Precision Acquisition, Supports Voltage and Current Measurement, Modbus RTU Protocol

Industrial 4-Ch DC Monitoring Module
Current / Voltage / Power Measurement

Modbus RTU ProtocolVoltage & Current MonitoringDC 7~36V Wide Voltage

16-bit High-Precision AcquisitionMultiple Isolation Protection Circuits

Features At A Glance

This product is an industrial-grade DC monitoring module supporting 4-channel measurement. Adopts Modbus RTU protocol with built-in protection circuits such as power isolation, optocoupler isolation, resettable fuse, and TVS.

Configurable device address (1~255), multi devices can be cascaded on RS485 bus
Onboard voltage regulator, supports 7~36V wide range power supply
Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
Onboard optocoupler isolation, allows signal isolation, high reliability, strong anti-interference
Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
Onboard 0.002Ω ±1% current sense resistor with 16-bit high-precision acquisition, capable of bidirectional current measurement
Supports voltage measurement up to 36V and current measurement up to 8A, with direct power measurement
Rail-mount case design, supports stacking combination, easy to install and safer to use
3x LEDs for indicating the MCU status and signal transceiving status

Specifications

COMMUNICATION INTERFACE	RS485
BAUD RATE	4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
DEFAULT COMMUNICATION FORMAT	9600, N, 8, 1
MODBUS PROTOCOL	Standard Modbus RTU protocol
POWER SUPPLY	DC 7~36V
CURRENT SENSE RESISTOR	0.002Ω 1%
MEASUREMENT RANGE	Voltage: 0 ~ 36V; Current: ±8A
RESOLUTION	0.8mA

Primary Function

Supports Sending Modbus RTU Commands Via RS485 To Measure DC Current, Voltage, And Power Data

Industrial Grade Isolated Protection

Onboard power and signal dual isolation for RS485 communication, provides stable isolation voltage, features high reliability and strong anti-interference performance. Built-in TVS (transient voltage suppression tube) can effectively suppress the surge voltage and transient peak voltage in the circuit, lightningproof & ESD protection. Built-in resettable fuse and protection diode to ensure stable current and voltage output, provides over-current and over-voltage proof, improves shock-proof performance, suitable for industrial environments with high requirements.

Interface Introduction

INx+ and INx- represent the current input and output terminals.The module measures the differential voltage across the current sense resistor connected in series between INx+ and INx- to determine the current flowing through the circuit.The module supports bidirectional current measurement.

Wide Voltage Power Supply, Isolated RS485 Interface

Built-In Fuse And Anti-Reverse Protection, With Power And Signal Dual Isolation

Rail-Mount Support

Supports 35mm Standard Guide Rail, With Rail-Mount Buckle, Easy To Install

Supports Stacking Installation

Product Show

Dimensions

[] Modbus RTU DC Monitor

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Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!