The BMS00020 includes a touch MCU, the BS83B04C, which is one of the bestsellers of Holtek. It provides excellent anti-interference ability and has been applied to multiple household appliances.

Capacitive Touch Sensor is suitable for use as an alternative to traditional switches. When a finger touches the copper trace area on the PCB representing the switch area, the capacitance of this area will change. By detecting this change in capacitance we have a way of detecting a switch press.

Using Capacitive Touch Keys in products greatly simplifies their structural design and provides for a more aesthetic and fashionable appearance. Their stable touch performance provides excellent reliability, durability, and ultra-long life. In addition, they also have the advantages of being dustproof, waterproof, scratch-resistant, and offering insulation protection against electric shocks.

These 4-Key Capacitive Touch Sensors can implement stable touch key actions without requiring complex mechanical structures. These modules can assist users in rapidly implementing their product designs which require capacitive touch key functions, providing a means to reduce their product development cycles.