In the newly developed Memotron tube the maximum working temperature is controlled by means of a memory metal spring which is positioned inside the heat-pipe's condenser.

The memory metal is programmed to change its shape at a pre-set temperature. This allows for the condenser fluid to be retained inside the condenser. When the programmed temperature has been achieved, the memory metal spring expands and pushes a plug against the neck of the heat pipe blocking the return of the condensed fluid and stopping heat transfer.

At temperatures below the maximum programmed limit, the spring contracts allowing the condensed fluid to return to the lower section of the heat pipe. It is than evaporated due to the heat from from the absorber plate, transferring thermal energy to the condenser.

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Mazdon's patented Memotron tube is the state of the art technology and provides complete safety through effective temperature control. This unique feature protects a solar system during short term system component failure serving as its last safety level. Memotron is NOT a design feature for seasonal (radiant heating) thermal application. A heat dump must be considered (space heating applications) when the collected energy exceeds load.