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  • New item   Digital plug-in thermostat | Schuko | 16 A | 230 V AC | -55…+125 °C | DS18B20 sensor 1.5 m | heating / cooling | DigiTOP TR-1

    Digital plug-in thermostat | Schuko | 16 A | 230 V AC | -55…+125 °C | DS18B20 sensor 1.5 m | heating / cooling | DigiTOP TR-1

    Code: TR-1
    Inquire about this item
    Price 41.84 € VAT incl.
    ( 34.58 € VAT excl. )

    Digital thermostat that plugs straight into a mains socket and switches the appliance plugged into it up to 16 A based on a remote DS18B20 sensor. Control range -55…+125 °C, hysteresis 0.1…39.9 °C, heating or cooling mode.

  • Product description

    Digital plug-in thermostat DigiTOP TR-1, 16 A, 230 V AC, -55…+125 °C, with DS18B20 sensor

    DigiTOP TR-1 is a digital temperature controller in a plug-in housing: it plugs into a mains socket and the controlled appliance plugs into the thermostat's socket. Temperature is measured by a remote DS18B20 digital sensor with a 1.5 m cable; the control range is -55…+125 °C. The relay switches an active load up to 16 A. Heating or cooling mode and a hysteresis of 0.1…39.9 °C can be selected.

    ⚠ ⚠ 16 A is the active (resistive) load limit, about 3.6 kW at 230 V. The wall socket and its circuit must also be rated for this – check that the socket and cables can handle it.
    Key idea:
    The TR-1 automates a heater, freezer, fan or incubator with no panel installation: plug it in, place the sensor where temperature must be measured and set the temperature. The digital sensor needs no calibration, and its cable can be extended up to 200 m. Settings are kept during a power failure.
    Load
    16 A
    Range
    -55…+125 °C
    Hysteresis
    0.1…39.9 °C
    Sensor
    DS18B20, 1.5 m

    Operating principle

    In heating mode (display HOT) the relay switches the load off at the setpoint and back on when temperature drops by the hysteresis value.

    In cooling mode (display COL) the logic is reversed: the load switches on when temperature rises above the setpoint and off when it falls by the hysteresis value.

    Three parameters are set: temperature, hysteresis and mode. A long press (> 5 s) enters setting mode; a short press changes the value in 0.1 °C steps, holding changes it in 1 °C steps.

    Why choose the TR-1?
    It is the fastest way to make any 230 V appliance temperature-controlled – without electrical work in a panel. The wide range lets the same thermostat be used for refrigeration as well as heating up to +125 °C.

    Technical specifications

    Product type Digital plug-in thermostat
    Manufacturer / model DigiTOP TR-1
    Supply voltage 230 V AC, 50 Hz (manufacturer: 220 V ±10 %)
    Max. active load 16 A
    Switching Electromagnetic relay
    Own consumption ≤ 5 W
    Measuring and control range -55…+125 °C
    Hysteresis 0.1…39.9 °C
    Modes Heating (HOT) / cooling (COL)
    Sensor Digital DS18B20, 1.5 m cable
    Sensor cable extension Up to 200 m with twisted-pair cable
    Measuring error ≤ 0.5 °C
    Resolution 0.1 °C within -9.9…+99 °C, otherwise 1 °C
    Indication LED display, output voltage LED
    Settings memory Non-volatile (kept during power failure)
    Degree of protection IP20
    Operating environment +5…+50 °C, 30–80 % RH
    Connection Plug into mains socket, socket for load (Schuko type)

    Main functions

    • Heating and cooling modes – one device for a heater or a fridge, fan.
    • Adjustable hysteresis 0.1…39.9 °C – from tight control to infrequent switching.
    • Digital DS18B20 sensor – no calibration needed when replacing the sensor.
    • Sensor cable up to 200 m – the measuring point can be far from the socket.
    • LED display – shows current temperature and settings.
    • Non-volatile memory – settings are kept during power failure.
    • Sensor fault diagnostics – the display shows a broken sensor, short circuit or communication error.
    • Plug-in mounting – no wiring in a panel.

    How does it differ from similar products?

    DIN-rail thermostat Installed in a panel and wired; the TR-1 plugs into a socket with no installation work.
    Mechanical plug-in thermostat No display, fixed hysteresis, narrow range; the TR-1 offers -55…+125 °C, adjustable hysteresis and digital indication.

    Where is it used?

    • Electric heater control in garages, workshops, greenhouses
    • Maintaining freezer and fridge temperature
    • Incubators and animal housing
    • Switching fans on when a room overheats
    • Heating water heaters and tanks (with a sealed sensor)
    • Frost protection of basements and storerooms
    • Fermentation, curing and drying processes
    • Temporary solutions on construction sites

    Use by need

    Beginner.
    Plug the TR-1 into the socket and the appliance into the thermostat, select HOT or COL mode and set temperature and hysteresis.
    Experienced installer.
    Extend the sensor cable with twisted pair and route it away from power cables – this avoids interference and crc errors.
    Energy engineer / designer.
    For loads above 16 A or inductive loads, use the TR-1 to drive a contactor coil rather than the load itself.

    Practical use

    In a garage a 2 kW electric heater is connected via the TR-1 in heating mode: setpoint +5 °C, hysteresis 2 °C. The sensor is hung away from the heater – the heater switches on at +3 °C and off at +5 °C. The heater current is about 8.7 A, well below the 16 A limit.

    Pros / advantages

    • No panel installation – plugs into a socket
    • Wide -55…+125 °C range
    • Heating and cooling modes
    • Adjustable hysteresis 0.1…39.9 °C
    • Digital sensor without calibration, cable extendable up to 200 m
    • Settings kept during power failure

    Cons / limitations

    • IP20 – dry rooms only
    • Operating environment +5…+50 °C – the thermostat itself cannot be in the cold
    • No time programs
    • The sensor must not be immersed in liquid without additional sealing

    Safety and installation notes

    • ⚡ Plug only into a sound, earthed socket; unplug the thermostat before changing the sensor or appliance.
    • ⚡ Do not connect a load exceeding 16 A or the rating of the socket and its circuit; changes to the socket circuit are made by a qualified electrician.
    • Protect the housing from moisture – IP20 gives no protection against water.
    • Route the sensor cable separately from power cables.
    • Do not use in explosive atmospheres without Ex certification; not suitable for corrosive environments, vibration or shock.
    • Seal the sensor additionally before immersing it in liquid.

    Quick selection guide

    16 A, 230 V AC
    -55…+125 °C
    Hysteresis 0.1…39.9 °C
    DS18B20, 1.5 m
    Suitable when you need:
    • to automate a 230 V appliance quickly without panel work
    • to hold temperature in heating or cooling mode
    • to measure temperature away from the socket
    Check before choosing:
    • Appliance power – active load up to 16 A
    • Where the thermostat will be – a dry place at +5…+50 °C
    • Whether the sensor will be immersed in liquid (then sealing is needed)
    Important reminder: The TR-1 is not a safety thermostat: it does not replace the appliance's internal overheat protection or an emergency temperature limiter.
    ☝ Elsprendimai.eu recommends:

    FAQ

    What appliance power can be connected?
    Active load up to 16 A – about 3.6 kW at 230 V. Check that the wall socket can also carry this current.
    Can it be used for a fridge or fan?
    Yes, in cooling mode (COL) the load switches on when temperature rises. Compressors and motors are best switched via a contactor.
    Can the sensor cable be extended?
    Yes, the manufacturer allows extension up to 200 m with twisted-pair cable routed away from power cables.
    Can the sensor be immersed in water?
    Only after additional sealing – the manufacturer prohibits immersing an unsealed sensor.
    Are settings lost during a power cut?
    No, all settings are stored in non-volatile memory.
    What do the fault codes on the display mean?
    They indicate a broken or missing sensor, a short circuit in the sensor circuit, or crc – invalid data caused by interference.

    Sources: DigiTOP TR-1 user manual, distributor data. Checked 2026-10-18.

    DigiTOP TR-1 – digital plug-in thermostat for heating and cooling

    DigiTOP TR-1 is a digital plug-in thermostat for a 16 A load with a DS18B20 sensor, a -55…+125 °C range and adjustable 0.1…39.9 °C hysteresis. It automates heaters, freezers and fans without installation work in a panel.

    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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