The safety of people and the environment is an important issue at any enterprise. One of the main threats in the production environment is the occurrence of fire and the failure of electrical equipment. Fire alarm systems provide immediate evacuation of people and fight the source of fire. The article describes implementation of an electrical circuit system based on a non-contact temperature sensor and a Hall effect current sensor, which is necessary for fire prevention. The experiment showed that the data obtained is sufficient for timely change of current level in the conductors and prevention of emergency situation. The article consists of an introduction, theoretical information about the temperature sensor and current sensor based on the Hall effect, description of Bluetooth Mesh network topology, development of a wireless network diagram for the electrical network monitoring system, conclusion.