This module provides the function of a logical OR gate. It is base on the 74HC1G32GW chip. The 74HC1G32GW is a high-speed Si-gate CMOS device that provides a 2-input OR function. The Grove - OR module therefore has two inputs on the left and one output on the right. The output of this logical OR gate module is HIGH when it gets a HIGH signal on any of the two inputs.
Note that this Grove - OR module is sold only as part of the above mentioned packs and is not available stand-alone from the Seeed Studio Bazaar.