For the part of keypads convex of membrane switch, “frame convex” may be used for production, the feeling of overlay’s keypads is comfortable, when pressing,it’s easily looking for a key position, and can prolong the service life of the keypads, a simple example is introduced as follows:
Side Schematic Diagram:
Voltage<=50VDC, Work Current<=100mA, lifetime>=500,000times
a, Demand of lifetime is high, keypads’ feeling is ok, with Metal Dome product,it feel better.
B, the combination of flat key type membrane switch, nearly silent effect, this switch can be applied to special occasions. Such as apply to the safe for quiet operation.
Advantage: the operator can easily find the operating position accurately, operating feeling of overlay is better, longer life. for this kind of switch, to prevent false triggering, improve the safety of the switch.
Application: widely used in intelligent electronic measuring instruments, electronic weighing apparatus, home appliances, electronic communication and industrial automatic system, and even cutting-edge space technology and military equipment, and other fields.