SJ101D Digital Weighing Indicator Specification

Model: SJ101D | Category: Economical Communication Weighing Indicator

Product Overview

The SJ101D is an economical weighing indicator that integrates bright display, communication, and control output. It features a 6-digit LED digital tube display with adjustable brightness, an RS485 communication interface, one relay output, and compatibility with multiple industrial protocols such as MODBUS-RTU and Yaohua. Practical and cost-effective, it is suitable for industrial weighing platforms, small batching systems, and other scenarios requiring data display, simple alarm control, and data upload.

Core Advantages: Clear display with adjustable brightness; Integrated communication and control, fully functional; Multi-protocol compatibility for easy integration; Supports custom output, flexible and practical.

Technical Specifications

Structure & Features

• 6-digit LED digital tube display with brightness adjustment support.

• Single-channel dry contact relay output and RS485 interface.

• Supports MODBUS-RTU protocol, Yaohua A7/A12 protocols and ASCII free protocol.

• Customizable 2-channel Open Collector (OC, high-level) outputs.

• Configurable upper/lower limits with alarm triggers for defined ranges, supports buzzer alarm.

Core Parameters

Interface & Output

Communication Interface:

RS485

Control/Alarm Output:

Relay x1 OC Output x2 (Custom) Buzzer

Sensor Wiring Definition

• E+: Excitation voltage positive (5V)

• E-: Excitation voltage negative

• S+: Signal feedback positive

• S-: Signal feedback negative

• Sh: Shield wire

Protocol Support

Function Features

Display & Operation

• 6-digit digital tube displays weight, unit, status symbols

• Menu setup via keys, easy operation

• Adjustable brightness for different ambient light conditions

Alarm & Control

• Configurable high and low alarm limits

• Relay activates on limit violation, can control audible/visual alarms or external devices

• Built-in buzzer provides audible alarm提示

• Optional OC outputs for driving other logic circuits

Basic Weighing Functions

• Tare, zero

• Unit switching (kg, g, lb, etc.)

• Digital filtering for stable readings

Application Scenarios

• Local display and alarm for industrial platform scales and bench scales

• Weight monitoring and over-limit control for small batching equipment

• Weighing stations requiring data acquisition by PLC systems

• Low-cost upgrade solution for replacing old Yaohua instruments

• Simple weighing demonstration equipment for laboratories and educational institutions

Customization Services

Qingsi Electronic Technology Co., Ltd. offers the following customization options based on your needs:

• Add one RS232 communication interface

• Customize 2-channel Open Collector outputs (active high)

• Modify display content or add specific status indicators

• Adjust housing dimensions, color, or key layout

Qingsi Electronic Technology Co., Ltd. All technical specifications subject to change without notice.

For inquiries and technical support: Manager Chen | Tel: +86 15106111829