The Caleffi 201000 is a self-powered thermostatic control head with a remote sensor, adjustable across 45 to 82 deg F (7 to 28 deg C). It fits a Caleffi thermostatic radiator valve body and holds room temperature at the dial setting without power or controls.
Best for radiators where the valve is enclosed, recessed or close to the floor and local air temperature would misread the room.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Self-Powered Room Temperature Control
A liquid-filled sensor expands and contracts with room temperature, closing the valve as the room reaches setpoint. No wiring, power supply or controller is required.
Remote Sensor or Adjustment
The sensing element is separated from the valve on a capillary, so the head can be read and set away from a recessed or enclosed radiator where local air temperature would be misleading.
Setting Range 45 to 82 deg F (7 to 28 deg C)
Graduated dial with a repeatable scale, allowing each room to be balanced to its own setpoint.
Fits Caleffi TRV Bodies
Threads onto Caleffi thermostatic radiator valve bodies, so heads and bodies can be selected independently.
Capillary Length
Supplied with a 2 m capillary, setting how far the sensor or adjuster can be mounted from the valve.
Technical Specifications
| Product Type | Thermostatic Control Head |
| Head Type | Remote Sensor |
| Capillary length | 2 m |
| Setting temperature range | 45 to 82 deg F (7 to 28 deg C) |
| Series | Control Heads (Remote Sensor) |
Documentation
Related Products
- Caleffi 200000 : Control Head, Built-in Sensor
- Caleffi 203502 : Control Head, Contact Probe
- Caleffi 472000 : Control Head, Remote Knob
- Caleffi 449010 : Manual Knob
Frequently Asked Questions
What does Caleffi 201000 do?
It is a self-powered thermostatic control head. A liquid-filled sensor expands as the room warms and throttles the radiator valve, holding the room at the dial setting without wiring, power or a controller.
Does Caleffi 201000 work on its own?
No. The head threads onto a Caleffi thermostatic radiator valve body, which is ordered separately. Heads and bodies are selected independently so the same head suits angled or straight bodies in several sizes.
When should the remote version be used?
Use a remote sensor or remote adjuster where the valve sits behind a cover, inside a cabinet or close to the floor. In those positions the air at the valve is not representative of the room, so a built-in sensor would control to the wrong temperature.
What is the warranty on Caleffi 201000?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of shipment. ZOT Supply is an authorized Caleffi distributor.
- Product Type:
- Thermostatic Control Head
- Product Family:
- Thermostatic control heads
- Series:
- Control Heads (Remote Sensor)
- Head Type:
- Remote Sensor
- Setting Temperature Range:
- 45 to 82 deg F (7 to 28 deg C)