Specifications of self-locking/unlocking switches are:  5.8*5.8 / 7*7 / 8.0*8.0 / 8.5*8.5mm Terminal pins can be used on PC boards. It feels good and can be matched with a cap. Self Locking：NO,Press power on maintain, one more press power off Reset: Press Button power on, press off come back to power off Self-locking switch generally refers to the switch comes with mechanical locking function, press down, let go of the button is not completely jump up, in a locked state, need to press once again, only to unlock completely jump up. It's called a self-locking switch. Early TV sets and monitors that were completely power off were the ones that used the switch. Push button switch is one of the most easy and quick to operate. The Switches, buttons are more attractive in appearance and the material that are used illuminative its surface, labeled as graphic convenience, operating the switch lead to the user satisfaction, can also be used in SMART CAP system where one can input device products, this is definitely the best choice for designers. Self-locking switch and tact switch difference: In fact, self-locking switch and light touch switch describe switch performance from different aspects; "Self-locking" means that the switch can be kept in a certain state (on or off) by a locking mechanism, and "light touch" means the amount of force used to operate the switch.