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  • New item   -25.76€Duct temperature transmitter | -30-70°C | Modbus RTU | 24VDC PoM | RJ45 | 85mm | IP65 | Sentera Controls | DTS-M-080
    New item   -25.76€Duct temperature transmitter | -30-70°C | Modbus RTU | 24VDC PoM | RJ45 | 85mm | IP65 | Sentera Controls | DTS-M-080 1
    New item   -25.76€Duct temperature transmitter | -30-70°C | Modbus RTU | 24VDC PoM | RJ45 | 85mm | IP65 | Sentera Controls | DTS-M-080 2

    Duct temperature transmitter | -30-70°C | Modbus RTU | 24VDC PoM | RJ45 | 85mm | IP65 | Sentera Controls | DTS-M-080

    Code: DTS-M-080
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  • Product description

    Duct temperature transmitter | -30-70°C | Modbus RTU | 24VDC PoM | RJ45 | 85mm | IP65 | Sentera Controls | DTS-M-080

    DTS-M-080 – a Sentera Controls digital duct temperature transmitter with Modbus RTU (RS485) communication. Measuring range -30…+70 °C, accuracy ±1 °C, 85 mm stainless steel probe. Powered by 24 VDC via Modbus (PoM) – power and communication arrive over a single cable through the RJ45 socket.

    Key idea:
    A single UTP cable with an RJ45 plug – and the sensor is already powered and passes the temperature to the Modbus network. No separate power wire or analog signal converters are needed.
    Measuring range
    -30…+70 °C, ±1 °C
    Communication
    Modbus RTU (RS485)
    Power supply
    24 VDC via Modbus (PoM), RJ45
    Protection
    IP65, 85 mm probe

    Operating principle

    The transmitter is mounted on the duct, and the 85 mm Ø8 mm stainless steel probe is inserted into the airflow. A single cable is connected to the RJ45 socket, carrying both the 24 VDC supply and the Modbus RTU signals: contacts 1, 2 – +24 VDC, 3, 4 – A, 5, 6 – /B, 7, 8 – GND.

    The transmitter measures air temperature in the -30…+70 °C range with ±1 °C accuracy and provides it in Modbus RTU registers. The left green LED indicates power, and the flashing green LEDs indicate active Modbus communication.

    Result – digital duct temperature in the controller, BMS or SCADA without analog transmitters, and the smooth steel probe is easy to clean, so the transmitter also suits hygienic ducts. The transmitter connects only to the Modbus network (not to a PT1000 or 0-10 VDC input); for Modbus power supply the DPOM8-24-20 is convenient, and for wall mounting the DTS-MB-BK-ASM bracket.

    Benefits DTS-M-080?
    Fewer wires and fewer installation errors: power and data in one RJ45 cable, and the temperature is digital – no signal loss on long lines.

    Technical specifications

    Product type Duct temperature transmitter with Modbus RTU
    Manufacturer / code Sentera Controls / DTS-M-080
    Series DTS-M (85 / 165 mm)
    Measuring range -30…+70 °C
    Accuracy ±1 °C
    Communication Modbus RTU (RS485)
    Power supply 24 VDC via Modbus (PoM)
    Energy usage Max. 0.192 W; Imax 8 mA
    Connection RJ45 (8 pins): 1, 2 – +24 VDC; 3, 4 – A; 5, 6 – /B; 7, 8 – GND
    Indication Green LED – power; blinking green LEDs – Modbus communication
    Probe Stainless steel, Ø8 mm, length 85 mm
    Overall height 142.5 mm
    Protection class IP65 (EN 60529)
    Operating environment -30…+70 °C, 5–95 % rH non-condensing
    Weight 0.043 kg (net)
    Compliance LVD 2014/35/EU (EN 60730-1), EMC 2014/30/EU (EN 61326-1, -2-3, -2-5), WEEE 2012/19/EU, RoHS 2011/65/EU

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

    Original manufacturer documentation – technical data, wiring diagrams and installation instructions.

    Main functions

    • Modbus RTU (RS485) – the temperature is read by a controller, BMS or SCADA.
    • Power over Modbus – 24 VDC supply over the same cable via the RJ45 socket.
    • RJ45 connector – one plug instead of four terminals – fewer wiring errors.
    • 85 mm stainless steel probe – easy to clean, low maintenance.
    • Low costs – up to 0.192 W (Imax 8 mA) – minimal load on the PoM line.
    • LED indication – power and communication status is visible at a glance.
    • IP65 – also suitable for damp ducts.
    • Wall mounting – with the DTS-MB-BK-ASM bracket, the same sensor also measures room air.

    Where is it used?

    • Supply and extract air ducts
    • Modbus automation of air handling units
    • BMS duct temperature monitoring
    • Heat recovery units, duct heaters and coolers
    • Hygienic ducts that need cleaning
    • Sites already using Sentera Modbus devices
    • Compact ventilation units and narrower ducts

    On-demand operation

    For the BMS integrator.
    Temperature straight into a Modbus RTU register – no analog conversion or calibration.
    For heat recovery unit manufacturers.
    An 85 mm probe and an RJ45 connector – a compact digital transmitter for the unit duct.
    For ventilation installers.
    An RJ45 plug instead of terminals – quick connection without errors.

    Practical application

    If the Modbus controller of a heat recovery unit needs the supply air temperature, then the DTS-M-080 is inserted into the duct, connected with a single UTP cable with RJ45 to the DPOM8-24-20, and consumes only up to 0.192 W from the 24 VDC PoM line.

    Application guide: how it is used in practice

    The DTS-M-080 is connected to a Modbus RTU network; only what reads the temperature changes:

    Site What is connected Result Installer's note
    Air handling unit with a Modbus controller DTS-M-080 in a supply air duct → RJ45 → Modbus line The controller regulates the heater / fans according to the supply air temperature A unique Modbus address for each device
    BMS site Multiple DTS-M-080 in different ducts → DPOM8-24-20 → BMS All duct temperatures on one network The DPOM8 supplies 24 VDC and acts as a Modbus repeater
    Extraction with outdoor air comparison DTS-M-080 in an extract air duct The data is used for heat recovery efficiency and modes Range -30…+70 °C
    Mounting the duct on a wall DTS-M-080 + DTS-MB-BK-ASM bracket The transmitter is mounted on a flat surface, e.g. a room wall The bracket is purchased separately

    How to choose a Modbus temperature transmitter

    Installation location / probe Recommended model
    Duct, 85 mm probe DTS-M-080 (duct, 85 mm) ← this model
    Duct, 165 mm probe DTS-M-160 (duct, 165 mm)
    Water pipe, strap-on DTP-M (pipe, 0–85 °C)
    DTS-M wall fixing DTS-MB-BK-ASM (bracket)
    Rule: choose the probe length according to the duct size so that the element is in the middle part of the airflow: 85 mm for smaller ducts, 165 mm for larger ones. For water pipes – DTP-M.
    When to choose another solution: passive sensors for controllers with a PT input – TUTSN (duct), ROTSN (room), FLTSN (with cable); for power and the Modbus line – DPOM8-24-20 (Power over Modbus module with a repeater).

    Pros

    • Modbus RTU – digital signal
    • 24 VDC supply via Modbus (PoM)
    • RJ45 connector – quick installation
    • IP65
    • Easy-to-clean 85 mm stainless steel probe
    • LED indication

    Cons / limitations

    • Accuracy ±1 °C – may not be sufficient for precision applications
    • No analog 0-10 VDC output – a Modbus controller is required; for a controller with a PT input choose the passive TUTSN
    • A 24 VDC Modbus power supply is required – the DPOM8-24-20 is intended for this
    • Range -30…+70 °C

    Safety and installation notes

    • Installation and connection are to be carried out by a qualified installer with the power disconnected.
    • Power supply 24 VDC only, via Modbus; observe the RJ45 pin assignment.
    • Install in ducts with a temperature of -30…+70 °C, without condensation.
    • Assign a unique address to each Modbus device.

    Quick selection guide

    Modbus RTU
    24 VDC PoM
    RJ45
    85 mm
    IP65
    Suitable when you need:
    • to measure duct temperature on a Modbus RTU network;
    • to reduce the number of cables using Power over Modbus;
    • to integrate temperature into a BMS without analog converters.
    Check before use:
    • whether the controller / BMS has Modbus RTU;
    • whether 24 VDC PoM power is available (e.g. DPOM8-24-20);
    • whether the 85 mm probe length suits the duct.
    Important reminder: The DTS-M-080 has no PT or 0-10 VDC output – it works only on a Modbus RTU network.

    FAQ

    How is the transmitter powered?
    It is powered at 24 VDC over Modbus (PoM) via the same cable through the RJ45 socket.
    What is the accuracy?
    Accuracy is ±1 °C over the entire -30…+70 °C range.
    Can it be connected to a 0-10 VDC input?
    Not directly, because the sensor has only a Modbus RTU output.
    What is the difference between DTS-M-080 and DTS-M-160?
    They differ in probe length: 85 mm and 165 mm.
    Can it be wall-mounted?
    Yes, with the separately purchased DTS-MB-BK-ASM bracket.
    How much power does it consume?
    The transmitter consumes up to 0.192 W, and the current does not exceed 8 mA.

    Duct temperature transmitter | -30-70°C | Modbus RTU | 24VDC PoM | RJ45 | 85mm | IP65 | Sentera Controls | DTS-M-080

    Sentera DTS-M-080 – duct temperature sensor -30…+70 °C with Modbus RTU, 24 VDC Power over Modbus supply via RJ45, 85 mm stainless steel probe and IP65.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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