![Grove HAT Base kit - 12 pcs sensors and modules compatible for Raspberry Pi - SmartbitBN- The Bruneian Geek portal Grove HAT Base kit - 12 pcs sensors and modules compatible for Raspberry Pi - SmartbitBN- The Bruneian Geek portal](http://smartbitbn.com/wp-content/uploads/2020/11/Grove-for-Raspberry-Pi-Brunei-Ultrasonic.jpg)
Grove HAT Base kit - 12 pcs sensors and modules compatible for Raspberry Pi - SmartbitBN- The Bruneian Geek portal
![DC10-30V Photoelectric Sensor Switch NPN 3-Wire U-Shaped Groove Switch Photocell Sensor Switch,Control Switch: Amazon.com: Industrial & Scientific DC10-30V Photoelectric Sensor Switch NPN 3-Wire U-Shaped Groove Switch Photocell Sensor Switch,Control Switch: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/517qTlkJkfL._SL1001_.jpg)
DC10-30V Photoelectric Sensor Switch NPN 3-Wire U-Shaped Groove Switch Photocell Sensor Switch,Control Switch: Amazon.com: Industrial & Scientific
![Groove type optical coupling plus relay module speed measuring sensor and relay pulse switch RY030|switch switch|switch sensorswitch 3 - AliExpress Groove type optical coupling plus relay module speed measuring sensor and relay pulse switch RY030|switch switch|switch sensorswitch 3 - AliExpress](https://ae01.alicdn.com/kf/HTB14r9QbrArBKNjSZFLq6A_dVXaE/Groove-type-optical-coupling-plus-relay-module-speed-measuring-sensor-and-relay-pulse-switch-RY030.jpg_Q90.jpg_.webp)