A wireless button

The utility model provides a wireless button comprising key, a microprocessor, a radio frequency chip and a power supply. The microprocessor is connected to the radio frequency chip through an SPI bus. The keys are connected on input port of the microprocessor. The power supply provides electric power for the microprocessor and the radio frequency chip. The key sends triggering signals to the microprocessor. The microprocessor sends alarm signals to the radio frequency chip through the SPI bus. The radio frequency chip sends the alarms signals in a wireless mode. The wireless button of the utility model adopts wireless transmission of alarm signals. The communication distance is long, and demands of household usage can be satisfied.