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  • New item   -86.23€Electronic temperature-controlled fan speed controller | 5-35°C | 6A | 230VAC | with PT500 sensor | Schuko socket | IP54 | Sentera Controls | GTE21-60-DT
    New item   -86.23€Electronic temperature-controlled fan speed controller | 5-35°C | 6A | 230VAC | with PT500 sensor | Schuko socket | IP54 | Sentera Controls | GTE21-60-DT 1
    New item   -86.23€Electronic temperature-controlled fan speed controller | 5-35°C | 6A | 230VAC | with PT500 sensor | Schuko socket | IP54 | Sentera Controls | GTE21-60-DT 2

    Electronic temperature-controlled fan speed controller | 5-35°C | 6A | 230VAC | with PT500 sensor | Schuko socket | IP54 | Sentera Controls | GTE21-60-DT

    Code: GTE21-60-DT
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  • Product description

    Electronic temperature-controlled fan speed controller | 5-35°C | 6A | 230VAC | with PT500 sensor | Schuko socket | IP54 | Sentera Controls | GTE21-60-DT

    GTE21-60-DT – a Sentera Controls electronic temperature-controlled fan speed controller for AC motors fed with single-phase 230 VAC up to 6 A. Plug-in version: the kit includes a PT500 temperature sensor and a power cable with a Euro plug; the fan is connected to the Schuko socket. Temperature setting 5–35 °C.

    Key idea:
    You plug it into a socket, insert the fan plug and set the temperature – as the temperature rises, the fan speeds up by itself. Suitable where simple, quick-to-install temperature-based ventilation is needed without a control panel and an automation design. A setting range starting from 5 °C allows ventilation to be controlled in cooler rooms as well – warehouses, cellars, and greenhouses in spring and autumn.
    Max. motor current
    6 A
    Temperature setpoint
    5–35 °C, PT500 sensor
    Connection
    Euro plug + Schuko socket
    Protection
    IP54, supply 230 VAC

    Operating principle

    The controller is powered via a cable with a Euro plug (230 VAC ±10 %, 50–60 Hz), the fan plugs into the integrated Schuko socket, and the PT500 sensor (included) connects to the GND and T (TEMP.) terminals. The unregulated 230 VAC output L1 (up to 2 A) can power a damper actuator or another 230 V device.

    The controller electronically varies the motor voltage between Vmin (80–160 VAC, external potentiometer) and Vmax (170–230 VAC, internal trimmer). While the temperature is below the setpoint (5–35 °C by potentiometer), the fan runs at minimum speed or, with the OFF level enabled by jumper JP5, switches off; above the setpoint, the speed increases within a proportional band of 2, 4 (factory), 6 or 8 °C (JP1/JP2), with a hysteresis of 0.5, 1, 2 (factory) or 3 °C (JP3/JP4).

    Result – the fan runs only as much as the temperature requires, and the controller is installed without a panel or electrical design. Engineer's note: when voltage is reduced on an AC induction motor, rotor losses increase, so the savings are smaller than with an EC fan or a frequency converter; if the motor hums at low speed, choose a GTH series transformer speed controller with sinusoidal voltage.

    Benefits GTE21-60-DT?
    Temperature-based ventilation without a control panel and complicated installation: the sensor and cable are already included, and the fan is connected by a plug.

    Technical specifications

    Product type Electronic temperature-controlled fan speed controller
    Manufacturer / code Sentera Controls / GTE21-60-DT
    Series GTE (GTE-1-60 / GTE21-60, DT and DM versions)
    Version DT – plug-in type, with PT500 sensor, Schuko socket and power cable
    Supply voltage 230 VAC ±10 %, 50–60 Hz, single-phase
    Max. motor current (Imax) 6 A
    Min. output voltage (Vmin) 80–160 VAC, external potentiometer
    Max. output voltage (Vmax) 170–230 VAC, built-in trimmer
    Unregulated output (L1) 230 VAC, max. 2 A
    Temperature setpoint 5–35 °C, potentiometer
    Temperature sensor PT500 (included)
    Proportional band 2 / 4 (factory default) / 6 / 8 °C, jumpers JP1/JP2
    Hysteresis 0.5 / 1 / 2 (factory default) / 3 °C, jumpers JP3/JP4
    OFF level Enabled / disabled with jumper JP5 (factory setting – disabled)
    Connection Power cable with Euro plug; Schuko socket for the motor; terminals L, N, PE, L1, GND, T
    Housing RABS V0, grey RAL 7035
    Protection class IP54, indoor use only
    Operating environment 0…+40 °C, < 95 % rH non-condensing
    Packaging dimensions 245×155×115 mm
    Weight 1.094 kg net / 1.236 kg gross
    Compliance LVD 2014/35/EU, EMC 2014/30/EU (EN 61000-3-2, EN 61000-6-2, EN 61000-6-3), RoHS 2011/65/EU

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

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

    Main functions

    • Plug-in connection – Euro plug for power, Schuko socket for the fan, PT500 sensor included in the kit.
    • Speed according to temperature – as the temperature rises above the setpoint, the fan speeds up smoothly.
    • Adjustable proportional band and hysteresis – jumpers adjust how quickly the fan responds to temperature.
    • Min. and max. speed – Vmin 80–160 VAC with a potentiometer, Vmax 170–230 VAC with a trimmer – speed and noise are limited to suit the site.
    • OFF level – optionally, the fan switches off when the temperature is below the setpoint.
    • Unregulated 230 V output (up to 2 A) – for a damper actuator or another 230 V device.

    Where is it used?

    • Greenhouses
    • Ventilation systems with temperature control
    • Livestock and poultry housing
    • Workshops, warehouses, technical rooms
    • Temporary or mobile ventilation where the fan is connected with a plug
    • Cooler rooms and seasonal ventilation (setpoint from 5 °C)

    On-demand operation

    For greenhouse and seedling growers.
    A setpoint from 5 °C suits a cooler plant-growing mode.
    For warehouse and seasonal premises caretakers.
    A plug-in connection and a PT500 in the kit – installed in a few minutes.
    For the electrician.
    Clear terminals, an IP54 housing and an unregulated 230 V output for the damper.

    Practical application

    If the temperature in a seedling nursery has to be kept at about 12 °C, then the GTE21-60-DT with the supplied PT500 is plugged in with its plug, the fan into the Schuko socket, and when the OFF level is enabled with jumper JP5, the fan switches off when the temperature falls below the setpoint.

    Application guide: how it is used in practice

    Typical GTE21-60-DT applications:

    Site What is connected Result Installer's note
    Greenhouse Fan → Schuko socket; PT500 → in the plant zone As the temperature rises, the fan speeds up; when it is cooler, it runs at minimum speed or switches off Install the sensor in shade, not in direct sunlight
    Poultry house / livestock room Extract fan up to 6 A Temperature-based ventilation is maintained, with the minimum air exchange level held at Vmin Leave the OFF level (JP5) disabled if continuous minimum ventilation is required
    Fan with air damper Damper actuator 230 VAC → L1 The damper is powered together with the controller L1 load – up to 2 A
    Workshops, warehouse Extract fan On a hot day extraction increases Increase the proportional band (6–8 °C) if the speed changes too abruptly
    Temporary site Euro plug → 230 V socket The device is easy to move to another location For indoor use only

    How to select the controller current

    Rated current of the motor(s) Recommended model
    up to 6 A · setpoint 15–35 °C · plug-in, with PT500 GTE-1-60-DT (6 A)
    up to 6 A · setpoint 15–35 °C · Modbus RTU GTE-1-60-DM (6 A)
    up to 6 A · setpoint 5–35 °C · plug-in, with PT500 GTE21-60-DT (6 A) ← this model
    up to 6 A · setpoint 5–35 °C · Modbus RTU GTE21-60-DM (6 A)
    Rule: the controller's max. current ≥ the rated current of the motor (or the sum of several motors) from the motor nameplate. The starting current has already been taken into account by the manufacturer, no extra margin is needed. When connecting several fans – of the same type, AC motors with voltage control – add up their rated currents. All GTE models are 6 A; choose by temperature range and version (DT / DM).
    When to choose another solution: for a different temperature setting range (15–35 °C) – GTE-1-60-DT; with Modbus RTU and terminal connection – GTE21-60-DM; sinusoidal voltage and a water heater valve – transformer GTH-1 / GTH21 series; electric heater – GTTE1 series; control by a 0-10 VDC signal – EVS-1 series; for EC fans – EC controllers with a 0-10 VDC output.

    Pros

    • Plug-in connection, PT500 sensor included
    • Automatic speed control according to temperature
    • Adjustable proportional band and hysteresis
    • Min. and max. speed are set
    • Unregulated 230 V output (2 A)
    • IP54 enclosure

    Cons / limitations

    • No Modbus RTU – for that choose GTE21-60-DM
    • Single-phase voltage-controllable AC motors only; not suitable for EC fans
    • Controlled only by ventilation logic – speed increases as temperature rises
    • Indoor use only, operating environment 0…+40 °C; no TK terminals or alarm output
    • No sinusoidal voltage – for sensitive motors choose the GTH series

    Safety and installation notes

    • Installation and connection must be carried out by a qualified electrician with the power disconnected.
    • Connect only to an earthed 230 VAC socket.
    • Check that the motor is suitable for voltage control and that its (or several motors') rated current does not exceed 6 A.
    • The unregulated L1 output load – no more than 2 A.
    • Intended for indoor use only: 0…+40 °C, < 95 % rH non-condensing.

    Quick selection guide

    6 A
    230 VAC
    5–35 °C
    PT500 included
    IP54
    Suitable when you need:
    • for temperature-based ventilation with an AC fan up to 6 A;
    • for greenhouse and farm building microclimate control;
    • for quick installation without a control panel – with a plug;
    Check before use:
    • the motor rated current and whether it is voltage-controllable;
    • whether the temperature setting range of 5–35 °C is suitable;
    • whether the fan has a Schuko plug;
    Important reminder: The GTE21-60-DT does not control EC fans, three-phase motors and heaters – it only changes the fan speed according to temperature.

    FAQ

    Is the sensor included?
    Yes, in the DT version the PT500 sensor and a power cable are included.
    When does the fan speed up?
    When the temperature exceeds the set value (within 5–35 °C); the speed increases over a proportional band of 2–8 °C.
    Can the fan switch off completely?
    Yes, if the OFF level is enabled with jumper JP5; it is disabled at the factory and the fan runs at minimum speed.
    Can several fans be connected?
    Yes, if their total rated current does not exceed 6 A and the motors are voltage-controlled.
    How does it differ from GTE-1-60-DT?
    The GTE-1-60-DT temperature setting range – 15–35 °C; other parameters are the same.
    How does it differ from GTE21-60-DM?
    The GTE21-60-DM has Modbus RTU and connects via terminals, but the kit has no plug, socket or sensor.

    Electronic temperature-controlled fan speed controller | 5-35°C | 6A | 230VAC | with PT500 sensor | Schuko socket | IP54 | Sentera Controls | GTE21-60-DT

    Sentera GTE21-60-DT – electronic temperature-controlled fan speed controller, up to 6 A, 230 VAC, setpoint 5–35 °C, PT500 sensor and Schuko socket included, IP54 – for greenhouses and temperature-based ventilation.

    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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