Source google image: https://www.lego.com/r/www/r/mindstorms/-/media/franchises/mindstorms%202014/products/in%20the%20box/inthebox_45509_ir_sensor_square.png?l.r2=-979888377
Lego mindstorm grue
Source google image: https://www.lego.com/r/www/r/mindstorms/-/media/franchises/mindstorms%202014/products/in%20the%20box/inthebox_45509_ir_sensor_square.png?l.r2=-979888377