The E3T-FL13 2M is an Omron photoelectric sensor that can be used to detect light and objects. This sensor is capable of outputting an analog voltage in response to variations in the ambient light conditions, allowing it to be used in a variety of different applications. The E3T-FL13 2M has a range of 0.5m to 2m, making it ideal for sensing obstacles over distances up to this range. It has an IPX7 rating, meaning it can withstand high levels of moisture and dust, making it suitable for a variety of environments. It also has a response time of 9 ms, making it very fast and efficient in its detection capabilities. It is also capable of power-saving by switching between normal and low power modes, allowing it to operate even in low-power applications.