TEC-1166 (2x ±5 A / ±56 V)

Dual Channel OEM Precision Temperature Controller / Peltier Controller

Typical cooling capacity: 2 x 140 W

TEC Controller - TEC-1166-TBTEC-1166 Terminal Block Version
TEC Controller - TEC-1166-TB TEC Controller - TEC-1166-TB TEC Controller - TEC-1166-TB

Hardware Configuration

Heading for custom options
TEC Controller Object Sensor Type
Terminal Configuration
For more information about the hardware configuration, click here or refer to the last page of the datasheet for ordering options.

Type K thermocouple can be used with our TEC Controller. Select VIN1 as object sensor type and order a TCI-1181 additionally.


Base price:599.00 CHF
Sales price 599.00 CHF
Total without tax:599.00 CHF
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Prices for multiple units
1: 599.00 CHF/unit
2: 581.00 CHF/unit
5: 558.00 CHF/unit
10: 541.00 CHF/unit

For more than 10 units,
please request a quotation

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The TEC-1166 is a powerful, dual-channel TEC Controller for precise control of Peltier elements. With up to 63 V input voltage an ideal candidate to be powered with lithium-ion batteries. In addition, we offer the proven meCom interface with the free of charge Meerstetter TEC Controller Software, extra GPIO’s for individual extensions with safety and measurement features, as well as professional support for a smooth and fast integration into every system.

Attention! We never ship our TEC Controller with (counter)plugs. Therefore, if you choose Terminal-Block (TB) version, there are no plugs shipped with the controller. You can get them at your preferred electronic part provider with the manufacturer product number 691381000008 or in our webshop as PLG-34434. For information about all the other connector plugs please refer to the datasheet provided in the Related Download section.

Detailed Description | TEC-1166 | TEC Controller

The TEC-1166 is a specialized TEC Controller/power supply able to precision-drive two Pel-tier elements.

  • Each channel features a true bipolar DC current source for cooling / heating, six temperature monitoring inputs (2x high resolution, 4x low resolution) and intelligent PID control with auto tuning. The TEC-1166 is fully digitally controlled, it’s hard- and firmware offer numerous communication and safety options.
  • The included free PC-Software allows configuration, control, monitoring and live diagnosis of the TEC Controller via USB and RS485. All parameters are saved to non-volatile memory. Saving can be disabled for bus operation.
  • For the most straightforward applications, only a power supply, a Peltier element and at least one temperature sensor need to be connected to the TEC-1166. After powerup the unit will operate according to preconfigured values. (In stand-alone mode no control interface is needed.)
  • The TEC-1166 can handle either Pt100, Pt1000, NTC or Voltage temperature probes. For highest precision and stability applications a Pt100 / 4-wire input configuration is recommended. Analog measurement circuit is factory calibrated.
  • Auxiliary temperature inputs allow the connection of NTC probes that are located on the heat sinks of the Peltier elements. This additional data is used to compensate for parasitic thermal conduction of Peltier elements. Also, it allows the control of external heat sink cooling fans.
  • The heating and cooling power is optimized by proprietary thermal management routines based on power balance models (for Peltier elements and resistive heaters).
  • Further functionality includes: Smooth temperature ramping, thermal stability indication and auto gain (NTC probes). The free PC-Software allows data logging and configuration import/export.

Pay-for software features

From firmware version ≥ 6.20, all Meerstetter TEC Controllers offer optional, pay-for software features that make the TEC Controller even more versatile. Try all features free of charge for the first 150 operation hours and then order from the specific feature product page(s).

Please note: The PC Software itself is always free of charge. Only a few advanced features within the software require a license after the first 150 operating hours of the TEC Controller (not of the software).

Available add-on features:

You can also find out more about the benefits and features on the product pages.

Free functions for TEC Controller (included)

Control and regulation

  • Heating and cooling (bidirectional)
  • Precise temperature control of at least ±0.01 °C or better
  • Temperature cycles / temperature cycling
  • Bipolar DC current output
  • Support for resistive heaters
  • Auto-tuning of PID parameters
  • Lookup tables for individual temperature profiles
  • Remote control and monitoring via standard interfaces
  • Firmware updates for function enhancements and bug fixes
  • Individually customizable control and monitoring functions
  • Precise temperature control and monitoring
  • Free configuration software included (for setup, control, monitoring and firmware updates)

Monitoring and safety functions

  • Temperature measurement and active temperature control
  • Supported temperature sensors: PT100, PT1000, thermocouples, NTC, voltage output sensors
  • Monitor data logger
  • Protection mechanisms: Overcurrent protection, overtemperature protection, overvoltage protection
  • Peltier Aging Diagnosis for TEC Controllers
  • Status and error flags (TEC OK, Running, Stable, Alarms)

Communication and integration

  • Stand-alone operation possible
  • Communication via USB, RS485, RS232, CANopen
  • LabVIEW driver available
  • APIs for Python, C/C++, .NET/C#, Arduino
  • MeCom Device Server as .NET-based interface between Meerstetter devices and various master applications
  • Optional displays available
  • Efficient, compact design
  • Fast system integration thanks to comprehensive documentation

Digital inputs/outputs (GPIOs) and system control

  • Versatile GPIO functions such as status displays, temperature control, fan and pump control, device activation, address configuration, serial communication and more.
  • Significant system simplification through integrated control and monitoring functions

Paid features for TEC controllers (optional)

  • Driver Channel Splitting: enables the conversion of a single bipolar output channel into two separate unipolar channels.
  • Cascade Temperature Control: improves the precision and speed of applications with fast thermal setpoint curves, especially in PCR systems. The additional cascade control loop improves temperature transitions and stability, resulting in faster and more accurate cycle performance.
  • Temperatur Estimator: improves thermal applications by allowing the TEC controller to control to a virtually measured target temperature without the need for direct, invasive measurement.

Further benefits and added value

  • 30 years of experience: proven technology you can rely on
  • Swiss quality and precision
  • Delivery from stock
  • Long-term product availability of hardware and software
  • Personal, direct technical support from Meerstetter engineers
  • Flexible adaptations and customer-specific solutions
  • Support with application development and system integration
  • Regular further development and maintenance of products

Technical Data | TEC-1166 | TEC Controller

Typical cooling capacity2 x 140 W
DC Input 11.5-63 V / 10 A
Bipolar Output 2x ±56 V / 2x ±5 A
Temperature Probe Input 2x Pt100, Pt1000, NTC, VIN, Thermocouple (K-type)
Temp. Precision / Stability 0.01 °C or better
Aux. Temp. Probe Input 4x NTC
Communication Interfaces RS485, USB, CANopen, RS232 TTL
Configuration / Diagnosis via Communication Interfaces and PC-Software (free of charge)
Operation Modes Stand-Alone
Remotely-Controlled
Script-Controlled
Driver Modes Current driver
Voltage driver
Full Temperature Control
Heat Only / Cool Only
Dimensions (L x W x H) 160 mm x 100 mm x 24 mm

Trial Device | TEC-1166 | TEC Controller

Experience the precision of the TEC-1166 TEC Controller for yourself with the free 8-week trial program.

This service from Meerstetter Engineering offers technical developers and other interested persons the opportunity to integrate the TEC-1166 into their projects, facilitating hands-on evaluation and ensuring seamless compatibility with specific applications.

By utilizing the trial program, developers can

  • make informed decisions,
  • reduce investment risks, and
  • accelerate project timelines.

The conditions are as follows:

  • 8 weeks trial period
  • Device provided free of charge by Meerstetter Engineering
  • Shipping costs to be covered by the customer

To ask for a trial device, please contact our sales team. We look forward to supporting your innovative projects.

Shop Information

  • Payments by credit card or by invoice
  • Cheques are not accepted
  • For more than the maximum number of units please request a quotation
  • Usually all products ship within 3-5 days
  • All prices excl. VAT (unless otherwise stated)
  • Additional to the shipping costs (only if sent with our account), there are duties and taxes to be paid by the recipient
  • The products are shipped worldwide