In a building, unanticipated and abrupt temperature changes are mainly caused by the characteristics of its architecture: shape, size, number of windows, skylights, etc. This could cause discomfort or health issues to people exposed to its environment. For this reason, this paper presents the development and implementation of a remote temperature measurement system, which collects data inside a building and shows temperature information to any device connected to its local network. This system consists of 4 nodes, each built with an 8- bit microcontroller, a temperature sensor, and a radio frequency transceiver and a main node, based on a Raspberry.