A module with a very wide range of applications. In conjunction with the encoder disc it is possible to use, for example, when calculating the rotational speed of motors, counting pulses, etc. The slotted sensor, i.e. the slotted optocoupler, sends a signal depending on whether the aperture is covered or not. The slot type photoelectric sensor is composed of an infrared light emitting diode and an NPN phototransistor with a groove width of 5.9 mm. As long as the non-transparent object passes through the slot, low level is set on module output. The Schmitt trigger is used to stabilize pulses. M3 screw mounting holes at both ends. Technical data: Working voltage: 3.3V-5V Output: digital Gap spacing: 5.9mm https://elecena.pl/product/22637571/6-mm-encoder-module-ir-infrared-optical-slit-sensor-speed-measuring-module 2023-02-27 https://elecena.pl/product/22637571/6-mm-encoder-module-ir-infrared-optical-slit-sensor-speed-measuring-module 2025-10-29