One is like a coin.
One is the size of this bank card.
The diameter of these two kinds of small cards is 22.5 centimeters
And our mechanism can trigger unlocking.
This er controller has two relays by default
The relay will automatically close in 110 seconds
Relay 2 will not be reset until the card is removed.
No. 3 this will not trigger
But not the hand.
Because when we remove the card, it resets.
We can stick the card to that uh
Wood or other props
Put it on the sensor