A light module for signaling comprising an assembly module (1), defined by a body with any geometry and ordinarily in the form of a box (2), including a rear closing (3) and a frontal lens (4) and, between said parts, an electronic circuit (5) and a corresponding set of light emitting diodes (6), being said electronic circuit (5) constituted by the following blocks: a source (7) to regulate the feeding voltage of other blocks within five volts with low quiescent current; synchronism (8) for electrical conditioning if an eventual reference signal for foreign synchronism occurs; blinking sequence generator (9) with means to define the period of time during which the set of lights (6) is on and off. Additionally, this block has means to receive information from the synchronism block to define the moment when a new blinking sequence starts; said set of lights (6) is constituted by LEDs (light emitting diodes) controlled by the blinking sequence generator (9) and its consumption is controlled by means of the current source block (7); and current control (10) to keep the current from the LEDs as constant, no matter which variations of powering voltage of the circuit may occur.