E3F-DS30C4是一款漫反射型光电开关，具有30厘米的检测距离。它采用红外线作为光源，工作波长为660纳米，能够有效检测不透明物体。该光电开关的工作电压范围较宽，直流型为DC6-36V，可满足不同设备的供电需求。其输出方式为NPN常开，最大输出电流可达300mA，能够稳定地为后续电路提供信号。此外，E3F-DS30C4还具备短路保护功能，可有效防止因电路故障导致的损坏，提高设备的可靠性和使用寿命。在价格方面，根据不同的销售渠道，其价格会有所不同，一般在几美元到十几元人民币之间。目前市场上有多家厂商生产此类产品，如沪工集团、感士达、鑫士能等，这些厂商在光电开关领域都具有一定的技术实力和市场份额。

The E3F-DS30C4 is a diffuse reflection photoelectric switch with a detection range of 30 centimeters. It utilizes infrared light as the source, operating at a wavelength of 660 nanometers, enabling effective detection of opaque objects. The photoelectric switch has a wide operating voltage range, with the DC type ranging from DC6 to 36 volts, which can meet the power supply requirements of various devices. Its output type is NPN normally open, and the maximum output current is 300 milliamperes, providing stable signals for subsequent circuits. Additionally, the E3F-DS30C4 features short-circuit protection, which can effectively prevent damage caused by circuit failures, enhancing the reliability and service life of the equipment. Regarding price, it varies depending on different sales channels, generally ranging from a few dollars to tens of yuan. Currently, there are several manufacturers producing this type of product, such as China Huagong Group, Gensida, and Xinsin. These manufacturers all possess certain technical capabilities and market shares in the field of photoelectric switches.