When you Tribute Summon this card by Tributing "Gadget" monsters, it does not start a chain. Gaining the appropriate effect(s) is a Continuous Effect.
If this card is flipped face-down, any effects it obtained from its Tribute Summon will disappear, even if flipped face-up again.
The effect granted by Tributing "Green Gadget" is a Continuous Effect.
The effect granted by Tributing "Red Gadget" is a Trigger Effect that starts a chain when this card inflicts battle damage.
The effect granted by Tributing "Yellow Gadget" is a Trigger Effect that starts a chain when this card destroys an opponent's monster by battle.
If you Tribute 2 of the same "Gadget" to Tribute Summon this card, the effect does NOT duplicate. For example, if you Tributed 2 "Yellow Gadgets" this card will not do 1200 damage to your opponent when it destroys a monster by battle.