Catalog > Internet of Things (IOT) Related Products > More Platforms Slotted Optical Switch on PCB Slotted Optical Switch on PCB HKD SPEED SENSOR USING LM393 SLOTTED OPTICAL SWITCH ON PCB WITH LM393 COMPARATOR TO MEASURE RPM ETC. 3,3-5V 20.82 ZAR inc for 1 Each 33 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Application: Widely used in motor speed detection, pulse count, the position limit, etc. Using imported optical coupling sensor, width 5mm. It have the output state light, if output high level, the lights are off. if output low level ,it on. If it covered,it will output high level;otherwise it output low level. Good signal and waveform, with strong driving ability for more than 15mA. The working voltage of 3.3V to 5V. Output: digital switch output (0 and 1). Equipped with a fixed bolt hole, easily install. Small board PCB size: 3.2 cm x 1.4 cm. Use the LM393 wide voltage comparer. Specifications The DO output interface can be directly connected to a micro-controller IO port, if there is a block detection sensor, such as the speed of the motor encoder can detect. DO modules can be connected to the relay, limit switch, and other functions, it can also with the active buzzer module, compose alarm. Wiring specification: VCC Connect the positive 3.3 5 V power supply GND Connect power negative DO TTL switch signal output AO This module does not work Package included: 1 x Speed Measuring Sensor Module