Fire alerting device and system

An outdoors fire alerting device, comprising

• a first part and a second part spaced apart from one another by a thermoelectric generator unit, the first part being shaped for insertion into a static object and the second, exposed part intended for being exposed to the ambient environment while the first part is retained within the static object;
• the first part, the second part and the thermoelectric generator unit being integrally coupled to one another;
• the thermoelectric generator unit being configured to generate electrical energy in response to a temperature difference between the first part and the second part;
• an alerting unit electrically coupled to the thermoelectric generator unit and configured to transmit a signal indicative of fire alert when the temperature difference between the first and the second part reaches a predefined value;
• wherein the first part has a generally cylindrical shape and is elongated along a first axis, wherein the first part is axial symmetric about the first axis;
• wherein the second part comprises a heat absorbing section and an antenna section, the TEG unit being configured to generate electrical energy in response to a temperature difference between the first part and the heat absorbing section of the second part, the antenna section is configured for transmitting the alerting signal;
• wherein the heat absorbing section and the antenna section are made of different materials.