DFRobot Self-Powered Wireless Switch (433Mhz)

The Self-Powered Wireless Switch (433Mhz) sends signals wirelessly without installing a battery. The switch is composed of a micro-generator and a 433Mhz radio frequency circuit. Based on the principle of electromagnetic induction, the micro generator converts the kinetic energy of the press into electrical energy that will be rectified and stored by the RF circuit later, by which a signal can be transmitted wirelessly.