UL Key Lock Switches of Yueshi Electronics Co., Ltd.
Firstly, according to the use of current and voltage levels, can be divided into low-voltage Key Switches (such as 4A, 2A and below), high-voltage Electrical Key Switch (10A, 16A, and above). Because the low-voltage Momentary Key Switch is a small current, it generally does not require any safety regulations, only need to comply with environmental protection; high-voltage On Off Key Switch need to have safety certification, such as: CCC, CE, UL, etc.
Second, according to the use of opening size: large key switch, small key switch. Small key switch main opening size (such as: 6mm, 8mm, 12mm, 16mm, 19mm, etc.); large key switch main opening size (such as: 22mm, 25mm, 28mm, 30mm, 36mm, etc.)
Third, according to the number of control switch line groups, it can be divided into single group line keys, two sets of line key switches and multiple sets of line key switches. Single group line key switch; means that only one group can be controlled first. Two-group key switch: refers to the key switch that can control two sets of lines at the same time (such as Jiekai 2801, 2011, 2012, 332, etc.). This kind of lock has the same connection, and one group is divided into two groups. Tongtong key: It means that two sets of lines are energized at the same time and power is cut off. A group of broken key switches: It means that one of the two sets of lines is always broken, the other is open, and cannot be turned on or off at the same time.
Fourth, according to the key distinction; can be divided into a row of key switch and bead key switch (ie flat key switch and round key switch), the key can be single or double pumping.
5. According to the key rebound and non-rebound function, the automatic rebound key switch can be distinguished, and the key switch is not rebounded.
