Small recessed unit comprising a square Zamak embellisher and a square diffuser of tempered glass. Diffuser in tempered optical glass with vitrified paint treatment. Floor floodlight, projects light over the tread. Power supply and remote control orders use the same cables, so each beacon only needs two cables. An electronic circuit charges the battery when mains is present which is indicated by a green light, checks the mains voltage value and sheds a courtesy light using two LED's. When mains is absent, emerging lighting is shed by means of two LED diodes.