Abstract: A wireless AC/DC bell which includes a transmitter circuit, which includes a battery power source, an indicator light, a modulation transistor, and an amplifier, and a receiver circuit, which includes a receiving antenna, a demodulator, an amplifier-rectifier circuit, a modulation transistor, a frequency discriminator, a register, and a speaker starter, wherein the transmitter circuit is driven by a bell button to produce a radio ringing signal; the speaker driver of the receiver circuit is driven to drive a speaker when the receiving antenna receives the radio ringing signal from the transmitter circuit and the received radio ringing signal is processed through the demodulator, the amplifier-rectifier circuit, the modulation transistor, the frequency discriminator, and the register.