Trolley-mounted scan laser therapy device with 300mW power (6 diodes of 50 mW each), for the treatment of areas exceeding 400 cm2 (at 50 cm from output), with adjustable scan from vertical to horizontal to mixed, for a high degree of penetration into human tissues. Automatic setting of treatment time according tothe energy to be delivered and the scanning surface selected. Two independent channels - one internal for scanning and one external to enable the application of an external laser handpiece at low or high power. Laser head provided with blue safety indicator light, to indicate when the device is on. Interlock safety device to stop the machine in remote, check the temperature in real time on the laser diode, perform self-diagnostics and report anomalies.