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VEMER - VE021200 - Klima SI mechanical wall thermostat with gas membrane knob
The VEMER Klima SI (code VE021200) is a wall-mounted mechanical thermostat with gas membrane technology and a convenient front knob to set the desired room temperature. It is suitable for controlling heating or cooling systems.
The device features a power indicator light that turns on when the thermostat is active, and an on/off switch to enable or disable operation. The summer/winter selector allows the user to choose between cooling and heating modes.
Operating principle
A gas inside the membrane expands as it heats up, increasing internal pressure. This pressure pushes the membrane against an electrical contact that activates the heating or cooling system, providing reliable temperature control without electronics.
Main features
- Temperature setting range: 5 ÷ 30 °C
- Differential / hysteresis: Δ 1.3 °C (± 0.2 °C)
- Modes of operation: summer / winter
- Relay capacity at 250 Vac: 10 (1.5) A
- Protection degree: IP20
- ErP class I
- Setting range limitation function (useful in public places)
- Dimensions: 82.9 × 76.5 × 30.9 mm
Note: when installed at altitudes above 1000 m above sea level, the calibration values are not guaranteed.
| Manufacturer | VEMER |
|---|---|
| Manufacturer code | VE021200 |
| Thermostat type | Mechanical |
| Application | Room |
| Operating mode | Heating + cooling |
| Mounting | Surface (wall) |
| Programmable | Non-programmable |
| Switching current | 10 (1.5) A at 250 Vac |
| Number of outputs | 1 |
| Sensor location | Internal |
| Hysteresis | Δ 1.3 °C (± 0.2 °C) |
| Minimum Temperature | 5 °C |
| Maximum Temperature | 30 °C |
| Voice assistant | None |
| Communication protocol | None |
| Display type | No display |
| IP degree of protection (IEC 60529) | IP20 |
| ErP class | I |





