6*6mm pcb tact switch 4 pin smd tactile switch momentary on off switch

Tact Switch Precautions for Safe Use
Use the tact switch within the rated voltage and current ranges, otherwise the Switch may have a shortened life expectancy, radiate heat, or burn out. This particularly applies to the instantaneous voltages and currents when switching.
Tact Switch Precautions for Correct Use
Storage
To prevent degradation, such as discoloration, in the terminals during storage, do not store the Switch in locations that are subject to the following conditions.
1. High temperature or humidity
2. Corrosive gases
3. Direct sunlight

Tact Switch Handling
1. Tact Switch Operation
Do not repeatedly operate the Switch with excessive force. Applying excessive pressure or applying additional force after the plunger has stopped may deform the disc spring of the Switch,resulting in malfunction. In particular, applying excessive force to Side-operated Switches may damage the caulking, which in turn may damage the Switch. Do not apply force exceeding the maximum (29.4 N for 1 minute, one time) when installing or operating Side-operated Switches.Be sure to set up the Switch so that the plunger will operate in a straight vertical line. A decrease in the life of the Switch may result if the plunger is pressed off-center or from an angle.
2. Tact Switch Dust Protection
Do not use tact switch that are not sealed in dust-prone environments. Doing so may cause dust to penetrate inside the Switch and cause faulty contact. If a Switch that is not sealed must be used in this kind of environment, use a sheet or other measure to protect it against dust.