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Industrial Temperature & Humidity Sensor with Modbus RTU Connectivity | AT-THMS 3.1

$166.00 USD

Product Overview

The AT-THMS3.1 is an industrial temperature and humidity monitor designed for data centers, server rooms, factories, warehouses, laboratories and controlled environments.

It combines a high-brightness LED display, RS485 Modbus RTU communication and two independent relay outputs in one compact device.

Operators can view environmental values locally, transmit data to PLC, SCADA or BMS platforms and activate alarms or cooling equipment when configured limits are exceeded.

Application in Data Centers

The main product image should show the AT-THMS3.1 installed at the end of an aisle between server racks in a modern data center.

The high-brightness LED display should remain clearly visible from a distance, allowing facility personnel to check temperature and humidity conditions without approaching each rack or opening a control cabinet.

The image should demonstrate the actual application of the device rather than presenting it as a standalone product on a plain background.

Electronic device with digital display and sensors on a white background

The Environmental Monitoring Problem

Data centers and industrial facilities depend on stable environmental conditions.

Excessive temperature can reduce equipment performance, shorten component life and increase the risk of unexpected shutdowns. High humidity may contribute to condensation and corrosion, while extremely low humidity can increase the risk of electrostatic discharge.

Manual inspections only provide readings at the moment they are performed. They cannot continuously record environmental changes or notify personnel immediately when conditions exceed acceptable limits.

A reliable monitoring solution should therefore provide:

  • Continuous temperature and humidity measurement
  • Clear local display
  • Remote data transmission
  • Automatic alarm activation
  • Historical data storage
  • Centralized system monitoring
  • Reporting and notification functions

The AT-THMS3.1 Solution

The AT-THMS3.1 provides continuous temperature and humidity monitoring for data centers, server rooms and industrial environments.

Its bright LED display allows operators to check current values directly at the installation location.

The RS485 Modbus RTU interface connects the device to compatible PLC, SCADA, BMS and industrial IoT platforms.

The two independent relay outputs can activate external equipment when temperature or humidity exceeds a configured limit.

Depending on the project, the relays can control:

  • Audible alarms
  • Warning lights
  • Cooling fans
  • Ventilation systems
  • Dehumidifiers
  • External control devices

The AT-THMS3.1 therefore combines local environmental display, industrial communication and basic control functions in one compact device.

system diagram

Key Features of AT-THMS 3.1

High-Brightness LED Display

Clearly visible from across the room, eliminating the need for close inspection while providing instant status updates similar to industrial temperature humidity displays.

RS485 Modbus RTU Communication

Direct integration with SCADA, PLC, and BMS systems for real-time monitoring and remote control.

Dual Independent Relay Outputs

Automatically trigger alarms or HVAC systems when temperature or humidity exceeds set thresholds.

Wide Measurement Range

Operates reliably from -40°C to +125°C, and 0–100% RH, suitable for server rooms, cold storage, and industrial floors.

Precision and Resolution

0.1°C / 0.1% rH resolution with ±1°C / ±5% rH accuracy ensures reliable environmental control.

Dual-Color LED Backlight Alert

GREEN: Temperature and humidity within safe range.
RED: Threshold exceeded – immediate visual warning.

Flexible Mounting

Panel or wall-mounted design fits diverse installation environments.

Global Power Compatibility

100–240V AC ensures deployment in international facilities.

Equipment Advantages

  • Operational Reliability: Continuously monitors critical environmental parameters to prevent downtime.
  • Data-Driven Insights: Export reports, track historical trends, and integrate with SCADA dashboards for analysis.
  • Scalability: Multiple AT-THMS 3.1 units can be connected via RS485 to a centralized monitoring gateway.
  • Automation Ready: Automatically triggers alarms or connected devices based on configurable thresholds.
  • Ease of Use: Intuitive LED display and Modbus integration simplify setup and operation.

 

ATSCADA Software Benefits

When connected to ATSCADA, the AT-THMS3.1 becomes part of a centralized temperature and humidity monitoring system.

Remote Monitoring

Authorized users can check environmental conditions from a smartphone, laptop or desktop computer.

This reduces the need for frequent on-site inspections and allows facility teams to supervise remote locations more efficiently.

Historical Trends

ATSCADA can store historical temperature and humidity data.

Operators can use trend charts to identify:

  • Repeated overheating
  • Unstable humidity
  • Cooling system problems
  • Environmental changes by time or location
  • Long-term operating patterns

Smart Alerts

The monitoring system can notify responsible personnel when temperature or humidity exceeds a configured limit.

Depending on the project configuration, notifications may be delivered through:

  • Email
  • SMS
  • Mobile notification
  • On-screen alarm
  • External warning light
  • Audible alarm

Automated Reports

The system can generate daily, weekly or monthly monitoring reports for:

  • Maintenance review
  • Management evaluation
  • Quality control
  • Internal audits
  • Environmental records
  • Customer documentation

API and Software Integration

ATSCADA can support project-specific integration with other software systems.

Available integration methods depend on the communication requirements and project scope.

ATSCADA Monitoring Interfaces

Mobile App ATSCADA

Authorized users can monitor temperature, humidity and alarm status from supported mobile devices.

Mobile access allows maintenance and management teams to review system conditions while they are away from the control room.

Mobile App ATSCADA

Web-Based ATSCADA

The web interface allows users to access monitoring dashboards through a supported web browser.

Users can view:

  • Current temperature
  • Current humidity
  • Device status
  • Alarm conditions
  • Historical charts
  • Monitoring reports
Web-Based ATSCADA

Export Reports to Excel , Email and SMS Notifications

Recorded environmental data can be exported to Excel for further analysis, management reporting or quality documentation.

The monitoring system can send notifications when configured environmental limits are exceeded. Notification functions depend on the selected software package and project configuration.

Export Reports to Excel , Email and SMS Notifications

View System Data on PC

Control-room personnel can monitor all connected AT-THMS3.1 units from a centralized computer.

The PC dashboard can display values from different server rooms, floors, buildings or industrial areas in one interface.

View System Data on PC


Technical Specifications

Parameter

Specification

Model

AT-THMS 3.1

Display

LED, 6 digits, 0.8" high-brightness

Temperature Range

-40°C to +125°C (±1°C accuracy)

Humidity Range

0–100% rH (±5% rH accuracy)

Resolution

0.1°C / 0.1% rH

Relays

2x independent outputs

Communication

RS485 Modbus RTU

Power Supply

100–240V AC, 50/60Hz

Mounting

Panel / Wall mount

IP Rating

IP50

Warranty

12 months


detail product

Primary Applications

Data Centers and Server Rooms

Monitor temperature and humidity around:

  • Server racks
  • Network equipment
  • UPS systems
  • Cooling units
  • Electrical panels
  • Technical rooms

The system helps operators identify abnormal conditions before they affect critical IT equipment.

Manufacturing Plants

Monitor production areas, control rooms, electrical rooms and locations containing temperature-sensitive equipment.

Cold Storage and Warehouses

Monitor environmental conditions for:

  • Food storage
  • Pharmaceutical products
  • Electronics
  • Raw materials
  • Temperature-sensitive goods

Cleanrooms and Laboratories

Support continuous environmental monitoring in areas that require stable temperature and humidity.

Telecom Rooms

Monitor communication cabinets, telecom equipment rooms and remote technical facilities.

Electrical Rooms

Track environmental conditions around switchboards, control panels, UPS systems and electrical equipment.

Commercial Buildings

Connect the device to BMS or SCADA platforms for centralized monitoring of technical rooms and building equipment areas.

Smart Factory & IoT Deployments: 

Integrate with ATSCADA cloud or local monitoring systems, and synchronized visualization devices such as LED matrix clocks.

Target Customers

The AT-THMS3.1 is suitable for:

  • Data center operators
  • Facility managers
  • Server room administrators
  • Industrial automation distributors
  • SCADA system integrators
  • BMS system integrators
  • HVAC companies
  • Electrical contractors
  • Factory owners
  • Maintenance departments
  • Warehouse operators
  • Cold-storage solution providers
  • Data center solution providers
  • OEM and private-label partners

We welcome inquiries from distributors, integrators and project partners seeking long-term cooperation.

OEM Support and Customization

We support distributors, system integrators and project partners with OEM and private-label services.

Available services may include:

  • Customized product branding
  • Customer logo printing
  • Private-label product stickers
  • Customized packaging
  • Customized instruction manuals
  • Project-specific software configuration
  • SCADA dashboard development
  • Modbus communication integration
  • Remote technical assistance
  • Stable supply for repeat orders

OEM requirements, minimum order quantities and customization costs depend on the requested configuration.

Please provide your logo, packaging requirements, target quantity and technical specifications so our team can prepare a suitable proposal.

Pricing Structure

Order Quantity Price Level Reference Price
1–10 units Sample price USD 146 per unit
50 units or more Distributor price USD 127 per unit
300 units or more Bulk-order price USD 107 per unit

The prices above are for reference only.

Final pricing may vary according to:

  • Order quantity
  • Product configuration
  • Branding requirements
  • Packaging requirements
  • Software requirements
  • Shipping terms
  • Destination market
  • Payment terms

Please contact our sales team for the latest official quotation.

packaging shipping

Why Choose Our Solution?

Integrated Hardware and Software

The AT-THMS3.1 can operate as a local display or become part of a complete ATSCADA monitoring solution.

Industrial Communication Support

RS485 Modbus RTU allows the device to connect with many common industrial automation and building management platforms.

Flexible System Architecture

Customers can deploy one standalone unit or connect multiple devices through a shared RS485 network.

Centralized ATSCADA Monitoring

ATSCADA can combine:

  • Real-time values
  • Alarm management
  • Historical trends
  • Remote access
  • Data logging
  • Report export
  • Email and SMS notifications

Project-Specific Integration

Our team can support communication setup, dashboard configuration and software integration according to project requirements.

OEM and Private-Label Support

Distributors can request customized branding, packaging and selected software functions.

Technical Assistance

Technical support is available for Modbus communication, SCADA connection and system configuration.

Long-Term Cooperation

We support distributors and system integrators seeking reliable products, technical assistance and repeat-order supply.

Contact Us

Contact our sales team to request:

  • Sample orders
  • Distributor pricing
  • OEM customization
  • Modbus communication details
  • ATSCADA software demonstration
  • Project consultation

Please provide your required quantity, delivery country and technical requirements for a faster quotation.

Get in Touch with Us for Consultation and Support.

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Frequently Asked Questions

ATPro Corp – Empowering the Future of Digital Industry Founded in 2009, ATPro Corp has grown into a trusted leader with more than 15 years of innovation in industrial automation and digital transformation.

Superior Quality -Diverse Products Tailored Custom Design Warranty Support 12 Months Warranty upon Sales Professional Consultation Dedicated and Detailed Customer Guidance.

We always use pre-production samples before mass production; We always conduct a final inspection before shipment.

Generally, it will take 7 days after receiving your advance payment. The specific delivery time depend the items and the quantity of your order.

No, we offer single-unit samples and bulk orders.

12 months with free replacement of defective parts.

We keep good quality and competitive price to ensure our customers benefit ; Also we respect every customer and we do business sincerely and make friends with them.

Accepted delivery terms: FOB, CFR, CIF, EXW; Accepted payment currencies: USD, EUR; Accepted payment methods: T/T, L/C, D/P, D/A, Money Gram, Western Union.

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