A method for transmitting a signal from wired security sensors and/or fire annunciators which comprises: wire-connecting each of the security sensors and/or fire annunciators to each input from a set of inputs of a signal transmission device, which comprises an analogue-to-digital converter that is coupled to a controller unit and a power supply unit, wherein each of the set of inputs of the signal transmission device is associated with an input zone from a set of input zones, an information regarding input zones of the set of input zones and inputs of the set of inputs of the signal transmission device associated therewith are stored in a storage device that is coupled to the controller, performing periodically receiving, by the controller, of wired connection resistance parameters for each input zone of the set of input zones, comparing the received wired connection resistance parameters of the respective input zone with predefined resistance parameters of this respective input zone, which are stored within said storage device, and assigning a status for each input zone of the set of input zones depending on results of comparison of the received resistance parameters with the predefined resistance parameters, wherein the status includes an "alarm" status for the respective input zone that has the wired connection resistance parameters, which differ from the predefined resistance parameters, forming an information regarding a status of each input zone of the set of input zones for which the wired connection has been performed, forming, by the controller, a data packet that includes the information regarding the status of each input zone of the set of input zones, for which the wired connection of the security sensors and/or fire annunciators has been performed, as well as an information regarding an operation status of the signal transmission device, sending, by the controller, the formed data packet via a radio module, which is coupled to the controller, to a central station that is configured at least to inform regarding a receipt of an "alarm" status. wire-connecting each of the security sensors and/or fire annunciators to each input from a set of inputs of a signal transmission device, which comprises an analogue-to-digital converter that is coupled to a controller unit and a power supply unit, wherein each of the set of inputs of the signal transmission device is associated with an input zone from a set of input zones, an information regarding input zones of the set of input zones and inputs of the set of inputs of the signal transmission device associated therewith are stored in a storage device that is coupled to the controller, performing periodically receiving, by the controller, of wired connection resistance parameters for each input zone of the set of input zones, comparing the received wired connection resistance parameters of the respective input zone with predefined resistance parameters of this respective input zone, which are stored within said storage device, and assigning a status for each input zone of the set of input zones depending on results of comparison of the received resistance parameters with the predefined resistance parameters, wherein the status includes an "alarm" status for the respective input zone that has the wired connection resistance parameters, which differ from the predefined resistance parameters, forming an information regarding a status of each input zone of the set of input zones for which the wired connection has been performed, forming, by the controller, a data packet that includes the information regarding the status of each input zone of the set of input zones, for which the wired connection of the security sensors and/or fire annunciators has been performed, as well as an information regarding an operation status of the signal transmission device, sending, by the controller, the formed data packet via a radio module, which is coupled to the controller, to a central station that is configured at least to inform regarding a receipt of an "alarm" status.