2PCS Slot Type IR Optocoupler Speed Sensor Module LM393 for /51/AVR/ #F5

2PCS Slot Type IR Optocoupler Speed Sensor Module LM393 for /51/AVR/ #A7

5Pcs Tiny RTC I2C DS1307 AT24C32 Real Time Clock Module For Arduino AVR PIC 51

10PCS LM393 Light Sensor Module 3.3 5V Input Sensor for #A6-33

2pcs New TLP2530 Optocoupler Isolated Optocoupler #F18

Unique DC 24V 2-Channel Voltage Comparator Precise LM393 Module #A6-42

2PCS LM393 3.3-5V Input 3 Pin Photosensitive Diode Light Sensor Module #F23

1pcs LM393 light Sensor Module 3.3-5V input light Sensor for #F23