- Mechanical assembly comprising of a high-power resistor (heater), heat exchange plates and an efficient fan-cooled heat sink. Two thermistors are used to measure the temperature on the sides of the thermoelectric device.
- Heater controller unit to vary the power supplied to the resistor. Mains powered. It shows voltage / current / power and the temperature of the heater.
- Fan controller unit to control the fan speed. Mains powered. The fan is a 4 wire Intel-spec unit and the controller allows adjustment of the fan’s speed and reads back the tacho frequency. The fan-side thermistor temperature is also shown on the display.
- Low-power version of the RO2 I-V tracer and at-load tester. This unit is used when the thermoelectric device is acting as a power generator.