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TS301
TS302

TS301 iot Temperature Sensor

TS30x
LoRaWAN® Temperature Sensor

TS30x is a high-accuracy temperature and humidity sensor with an LCD display, supporting multiple probe options across food, pharmaceutical, cold chain, and more. It ensures reliable data, consistent product quality, and compliance.

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Flexible & Compliant
IoT Temperature Sensors

Certified for Cold Chain Traceability EN12830 Standard

Compliant with EN12830, ensuring reliable temperature monitoring in cold chain storage.

Supports HACCP Compliance

Meets Hazard Analysis and Critical Control Points (HACCP) requirements to help ensure food safety and quality.

Secure Automated Data Export

Automates data export to reduce manual effort and human error, with encrypted PDF files ensuring data integrity and meeting 21 CFR Part 11 (ERES) compliance.

5-15 Years Battery Life

Powered by dual ER18505 batteries, delivering 5-15 years long-term operation.
*depending on the combination of device, temperature probe, and door sensor

TS301 Single-Channel Version

Supports connection with one temperature, TH Probe or door magnetic sensor

TS302 Dual-Channel Version

Supports simultaneous connection with one temperature/TH Probe plus one door magnetic sensor, or two Temperature/TH Probes.

Robust Performance and Easy Deployment

Clear Display & Rugged Design

Secure Data & Fast Response

Easy Deployment

Sharp LCD Display

The LCD provides clear visual output for effortless at-a-glance reading. Its low power consumption also helps extend the battery life.

Rugged IP65 Protection

Features IP65 dust and waterproof protection, with the external USB interface secured by dust caps, making it durable for a variety of applications.

sharp lcd display
rugged ip65 protection

Robust Data Storage & Retrieval

Stores up to 10,000 historical records, supporting data retrieval and retransmission to prevent data loss and maintain integrity.

Real-Time Alerts On the Go

Receive immediate notifications for potential issues like temperature spikes or open doors. Data is quickly transmitted to the cloud for easy access and retrieval, helping reduce inventory losses in refrigerators and freezers.

Instant D2D Communication

Supports Milesight D2D protocol for direct communication between Milesight devices without gateways, enabling ultra-low latency and fast control.

Zero-Touch Maintenance via FUOTA

Supports FUOTA firmware upgrades to keep devices up to date without the need for costly on-site maintenance.

robust data storage and retrieval
real time alerts on the go
instant d2d communication
fuota

One-Tap NFC Configuration

Switch on/off and configure devices quickly by tapping your phone to the sensor via the Milesight ToolBox App, enabling hassle-free device management.
Learn more about NFC Configuration

Flexible Mounting Options

Supports installation with wall plugs and screws or with magnetic nuts (optional) to enable quick and easy setup in a variety of environments.

one tap nfc configuration
flexible mounting options

IoT Temperature Monitoring for Food Safety and Pharma Compliance

Food Cold Chain Monitoring

Pharmaceutical Storage

food cold chain monitoring

Across the food cold chain, from storage warehouses to kitchen refrigerators and walk-in coolers, frequent door openings and restocking can lead to temperature fluctuations and increase the risk of food spoilage and safety incidents.

TS30x IoT temperature sensor enables reliable remote monitoring to ensure food safety with:

  • Built-in LCD screen for real-time temperature visibility

  • Instant alerts for sudden temperature spikes, allowing timely intervention

  • Optional food-grade probe for safe and accurate measurement

  • Supports HACCP compliance, helping standardize food safety management

  • EN12830 certification for compliant and traceable temperature monitoring

Explore Milesight Cold Chain Solution
pharma storage

In pharmaceutical environments such as vaccine refrigerators, pharma cold storage and medical storage units, frequent access or doors left open can cause temperature deviations that risk drug efficacy, and unreliable records may lead to compliance and audit challenges.

TS30x IoT temperature sensor supports continuous and trustworthy monitoring and verifiable data with:

  • Supports 21 CFR Part 11 (ERES) compliance, ensuring data integrity and full traceability

  • EN12830 certification, supporting regulated temperature-controlled storage

  • Real-time alerts for temperature spikes, with optional door sensor for open-door detection

  • Local data storage with data retransmission, avoiding data loss and ensuring data traceability

  • Optional glass bead thermal buffer bottle for more accurate readings

Explore Milesight Hospital Temperature Monitoring Solution

Flexible Probe & Door Sensor Support for Diverse Scenarios

TS30x works with multiple temperature, TH probes, and door magnetic sensors, and all probes are detachable for calibration, providing full flexibility to meet various application needs.

Learn more about Milesight calibration service probe form Discuss Your Needs

IoT Temperature Monitoring in Action

Healthcare

Commercial Buildings

Italy
See How We Did It

Cold Chain Monitoring at an Italian Pediatric Hospital

TS302 IoT temperature sensors were deployed as part of an IoT solution in an Italian pediatric hospital to enable real-time temperature monitoring for medical freezer. Equipped with temperature probes and door contacts, TS302 ensures precise freezer monitoring and supports cold chain control for pharmaceutical storage. By integrating various Milesight devices into the GxP-certified ConsolONE platform, the solution reduces manual checks, centralizes data management, supports AIFA compliance, and ensures safe handling of medical supplies.

Location:

Naples, Italy

Devices Deployed:

TS302, AM102, WS523, VS121, UG65

healthcare topological graph
healthcare
United Kingdom
See How We Did It

Smart Energy and Water Management for a Multi-Site Hotel Group

TS302 sensors deliver continuous monitoring of hot and cold water systems across multiple hotels, enabling automated Legionella compliance and removing the need for manual checks. Combined with Milesight's IoT ecosystem, the complete solution delivers real-time risk alerts, minimizes potential water leakage, streamlines daily operations, and provides timestamped data to support audits and regulatory compliance.

Location:

United Kingdom

Devices Deployed:

TS302, EM300-SLD, EM300-MLD, UC100, CT101, CT303, UG65

commercial buildings topological graph
commercial buildings

Temperature Series for Varied Monitoring Needs

See Full Comparison

FAQ

Q: What is an IoT temperature sensor?

An IoT temperature sensor is a connected device that continuously measures and transmits temperature data, and often humidity, to a cloud platform or monitoring system via wireless protocols such as LoRaWAN®, Wi-Fi, or cellular. Unlike traditional data loggers that require manual retrieval, IoT temperature sensors enable real-time remote monitoring, automated alerts, and centralized data management across multiple locations. They are widely used in cold chain logistics, pharmaceutical storage, food service, and building management to maintain environmental compliance, reduce spoilage risk, and support audit-ready recordkeeping.

Q: Why are IoT temperature sensors well-suited for food and pharmaceutical monitoring?

Food and pharmaceutical environments share a common challenge: temperature deviations are invisible until damage is already done. Manual checks create coverage gaps, and standalone loggers require physical retrieval before anyone knows there's a problem. IoT temperature sensors address this by delivering continuous, real-time visibility across every monitored point with automated alerts, tamper-evident recordkeeping, and remote access to historical data. This combination of proactive monitoring and audit-ready documentation makes them a practical fit for environments where both product integrity and regulatory compliance are non-negotiable.

Q: How does the TS30x support 21 CFR Part 11 and HACCP compliance?

The TS30x supports regulatory compliance through a combination of accurate measurement, secure data handling, and automated recordkeeping.

For 21 CFR Part 11 (ERES) compliance, the TS30x enables secure electronic records through encrypted data export in PDF format, ensuring that records are tamper-evident and audit-ready. Data is automatically logged without manual intervention, reducing the risk of gaps or human error that could compromise record integrity. When integrated with compatible platforms, the system also supports access controls and audit trail requirements critical to 21 CFR Part 11 adherence.

For HACCP compliance, the TS30x continuously monitors critical control points such as refrigerated storage, cold preparation areas, and food holding environments. Automated logging eliminates the reliance on manual temperature checks, while configurable threshold alerts ensure that any excursion is detected and can be acted on immediately. Historical records are stored and retrievable, providing the documentation needed to demonstrate that critical limits were consistently maintained.

Together, these capabilities help food and pharmaceutical operations reduce compliance risk, prepare for regulatory audits, and maintain the standards required to protect product quality and consumer safety.

Q: What are the advantages of wireless temperature monitoring with the TS30x?

Deploying wired monitoring systems in environments such as hospitals, pharmaceutical facilities, or large cold storage warehouses is often limited by access restrictions, infrastructure complexity, and ongoing maintenance costs. The TS30x overcomes these challenges with its LoRaWAN®-based wireless design, leveraging low-bandwidth communication to enable long-range transmission and strong signal penetration. This eliminates the need for cabling and allows for fast and flexible installation, even in hard-to-reach or access-controlled areas, without disrupting daily operations.

In addition, the TS30x is designed for long-term efficiency. With a battery life of up to 5–15 years, it significantly reduces the need for frequent maintenance visits. When updates are required, FUOTA (Firmware Update Over-the-Air) enables remote upgrades without physical intervention, an essential advantage in sensitive or regulated environments such as hospital wards or pharmaceutical storage. Overall, it delivers a monitoring solution that is easy to deploy, highly scalable, and cost-effective over time.

Specifications

Wireless Transmission
TechnologyLoRaWAN®, Milesight D2D
AntennaInternal Antenna
FrequencyCN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power16dBm (868MHz)/22dBm (915MHz)/19dBm (470MHz)
Sensitivity-137dBm @300bps
ModeOTAA/ABP Class A
Sensor Connector
See datasheet for optional sensor specifications.
Connector Type5-pin M12 A-Coded Male Connector
Connector Number1TS301: 1 × Connector for Temperature/Humidity Sensor or Magnet Switch Sensor
TS302: 2 × Connectors for two Temperature/Humidity Sensors or Temperature/Humidity Probe + Magnet Switch Sensor
Display
DisplayLCD Segment Code Screen
Viewing Direction12 O'clock
Others
Button1 × Power Button (External) + 1 × Reset Button (Internal)
LED Indicator1 × Status Indicator (Internal)
USB1 × Type-C Port for Power Supply
Software
Power On/OffNFC, Power Button
ConfigurationMobile App via NFC, Downlink
Data Logging10, 000 measurements and supports to export as CSV or PDF file
Advanced FeaturesThreshold Alarm, Change Alarm, Data Retrievability, Data Retransmission, Milesight D2D Controller, Milesight D2D Data Transmission
Physical Characteristics
Power Supply2 × 4000 mAh ER18505 Li-SOCl2 Batteries or Type-C USB (5V/1A)
Battery Life2
(30°C, 10 min interval)
TS30x + One PT100 Sensor:
Over 5.2 years (SF7, EU868), Over 4 Years (SF10, EU868)
Over 5 years (SF7, US915), Over 3.3 Years (SF10, US915)
TS301 + Magnet Sensor (10 triggers per day):
Over 10 years (SF7, EU868 & US915)
Around 7.3 Years (SF10, EU868), Around 5.3 Years (SF10, US915)
TS302 + PT100 Sensor + Magnet Sensor (10 triggers per day):
Over 5.2 years (SF7, EU868), Over 3.9 Years (SF10, EU868)
Over 5 years (SF7, US915), Over 3.2 Years (SF10, US915)
TS302 + Two PT100 Sensors:
Over 3.2 years (SF7, EU868 & US915)
Over 2.7 Years (SF10, EU868), Over 2.4 Years (SF10, US915)
Operating Temperature-30°C to +70°C
Relative Humidity0% to 95% (non-condensing)
Ingress ProtectionIP65
Weight175 g (TS301), 185 g (TS302)
Dimension109.35 × 75 × 29 mm (4.31 × 2.95 × 1.14 in)
InstallationWall Screw Mounting, Magnetic Mounting (Opt.)
Approvals
RegulatoryCE, FCC, EN12830
EnvironmentalRoHS

1TS302 does not support to connect both magnet switch sensors.
2The battery life is based on test results under laboratory conditions using the standard battery provided by Milesight. Actual performance may vary depending on battery brand, environmental factors and the type of probe used.

PC24051 AC/DC-DC Power Converter Kit

Customizable

  • Output Voltage:5V
  • Output Current:1A
  • Output Port:Type-C
  • Applicable Products:TS301/TS302/UC100 UC100 (EA)

    SP13-125-150 TH Sensor

    Optional

    • Maximum Temperature Range:125℃
    • Accuracy:Temp: ± 0.3°C (-40°C~0°C), ± 0.2°C (0°C~65°C) ± 0.5°C (65°C~125°C); Humidity: ± 2% RH
    • Cable Length:1.5m
    • Applicable Products:TS602/TS301/TS302

      SP12-125-150 Independent Calibration DS18B20 Probe

      Optional

      • Measuring Range:-40℃~125℃
      • Accuracy:± 0.5°C(10°C ~ 85°C), ± 2°C(-40°C ~ -10°C, 85°C ~ 125°C)
      • Cable Length:1.5m
      • Applicable Products:TS201/TS602/TS301/TS302

        MN1605 Magnetic Nut

        Customizable

        • Size:16(D) * 15(H)mm
        • Applicable Products:TS301/TS302/TS201/TS201-TH/TS602/CTH01

          TB3984 Glass Bead Thermal Buffer Bottle

          Optional

          • Size:Φ39 * 84mm
          • Applicable Products:TS301/TS302/TS201/TS602
          • *Only the thermal buffer bottle is included. The probe is sold separately.

          Thermal Buffer Mounting Bracket

          Customizable

          • Applicable Products:TS301/TS302/TS602

            SP11 Regular Version PT100 Probe

            Optional

            • P/N:B05-125-200
            • Probe Grade:B
            • Measuring Range:-40 °C ~ 125 °C
            • Accuracy:± 0.5°C (-40°C~40°C), ± 1°C (40°C~125°C)
            • Length:5cm
            • Cable Length:200cm
            • Applicable Products:TS301/TS302/TS602

              SP11 Food Applications PT100 Probe

              Optional

              • P/N:AF10-125-150
              • Probe Grade:A
              • Measuring Range:-40 °C ~ 125 °C
              • Accuracy:± 0.4°C
              • Length:10cm
              • Cable Length:150cm
              • Remarks:Food grade probe
              • Applicable Products:TS301/TS302/TS602

                SP11 Industrial Applications PT100 Probe

                Optional

                • P/N:A05-500-150
                • Probe Grade:A
                • Measuring Range:-50°C ~ 500°C
                • Accuracy:± 0.4°C (-50°C~125°C), ± 1.15°C (125°C~500°C)
                • Length:5cm
                • Cable Length:150cm
                • Applicable Products:TS301/TS302/TS602

                  SP11 Low Temperature Application PT100 Probe

                  Optional

                  • P/N:A03-050-150
                  • Probe Grade:A
                  • Measuring Range:-200 °C ~ 50 °C
                  • Accuracy:± 0.5°C (-175°C~50°C), ± 0.55°C (-200°C~-175°C)
                  • Length:3cm
                  • Cable Length:150cm
                  • Applicable Products:TS301/TS302/TS602

                    SP11 Pipe Monitoring Application PT100 Probe

                    Optional

                    • P/N:A09-085-200-B046
                    • Probe Grade:A
                    • Measuring Range:-20 ℃ ~ 85℃
                    • Accuracy:± 0.4°C
                    • Length:9cm
                    • Cable Length:200cm
                    • Remarks:With 46mm baffle
                    • Applicable Products:TS301/TS302

                      SS21 Magnetic Contact Switch Sensor

                      Optional

                      • P/N:PN03-150
                      • Max Sensing Distance:3cm
                      • Cable Length:150cm
                      • Applicable Products:TS301/TS302

                        PA31205 AC-DC Power Adapter with USB-A to Type-C Cable (1.2m)

                        Optional

                        • Output Voltage:5V
                        • Output Current:1A
                        • Output Port:Type-C
                        • Cable Length:1.2m
                        • Applicable Products:TS301/TS302

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