Product Details:
Main unit x 2
Size (H x W): 2.7 x 1.8 inches (6.8 x 4.5
Wire length: 7.9 inches (20 cm).
Color: Black.
Setting Method: 1. Turn the dial to the default number "0000" and press the button to unlock it.
2. Press the reset button on the opposite side of the button to set the number of the dial to your preferred number *Please be careful not to forget the number.
3. Insert the wire until it clicks, then turn the dicel to lock it.