The measurement light curtain is generated by the detection light generated by the emitter at a fixed distance along the length direction to generate a light array, which forms a light curtain in a scanning way with the controller and its software - to achieve the function of monitoring and measuring the shape of the object - the measurement system of the measurement light curtain needs to be equipped with a controller to work normally. - The controller uses software for programming Settings - can provide a variety of scanning mode and detection and analysis mode, and can be connected with PLC or computer through serial port communication transfer control or scanning results - in addition, access to trigger signal control scanning process.