Logic gates are linking elements such as AND, OR, NAND (not AND) and GENERAL (COMBO). You can use them for linking several sensors, weather and time elements with actuators, so that the project is only triggered if the result of the logic gate will be true.
logic table:
| A | B | OR | AND | NAND |
| 1 | 1 | true | true | false |
| 0 | 0 | false | false | true |
| 1 | 0 | true | false | true |
| 0 | 1 | true | false | true |
Using the COMBO (General) logic gate you can choose all combinations of requirements for which the result will be true.