You decide when and how long to heat - no matter whether if it's protection from black ice or frost.

Features and benefits

  • Protection from frozen humidity
  • Protection from frost in general
  • Compact shape
  • No open control elements
  • Installable anywhere

Do you have any questions or like to place an order?

General questions
07135/98 98 0 or

Question about our products


The inexpensive alternative

The Hemstedt frost alarm is ideal to inexpensively control, for example, gutter heating. Two regulators detect the critical temperature range in which frost damage could occur. Thus, the heating system is only turned on when there's danger, and it will be turned off when ambient temperatures are on an acceptable level. This simple frost alarm is a lot more inexpensive than its digital counterparts and useful everywhere where no founded sensors are necessary.


Robust structure, simple operation

The robust, simple structure makes this frost alarm especially attractive. Two capsuled, water-proof temperature sensors on the inside control the temperatures at which the heating system will be turned on or off. With the use of two regulators, those temperatures can be adjusted to the user respective needs. Thus, the Hemstedt is suitable, for example, for greenhouses or heating cables for shrubs that wouldn't survive extremely low temperatures.


Easy to install

Because the Hemstedt frost alarm is barely bigger than a normal surface socket, it is inconspicuous and can be installed anywhere without any problems. Once it is set up, it is sealed so no control elements are exposed. Thus, this frost alarm is suited for installation in public spaces.


Made in Germany

And since no one wants to worry about ice-free gutters every year, the Hemstedt frost alarm is 100% "Made in Germany" and both absolutely reliable and durable.

Our products also run on fuel cell / hydrogen technology!
Made in Germany - since 1974
  • Underfloor heating is harmful to your health? Wrong!

    This prejudice is from the 1960ies and no longer correct.

    Quite the contrary!

    Here You get to know why!

  • Electric underfloor heating is expensive? Wrong!

    A comparison in terms of acquisition and consumption gives clarity.

  • Electric underfloor heating

    Pros and cons underfloor heating – Does it make sense?

  • Creative freedom and feel good architecture thanks to underfloor heating

    „Heat coming up from beneath as naturally as heat rises - there is no other ideal heat“ (Frank Lloyd Wright)

Specifications FR FROST ALARM AND REGULATOR Item no. 93160

Rated Voltage 230 V AC
Switch current 16 (4) A
Ambient temperature -30 to +50 °C
Temperature range -20 to -35 °C
Degree of protection IP 65
Dimensions 122 x 120 x 55 mm
Contact 1 NC / 1 NO