Rf remote controlling device

A remote controlling device comprising:

• a host including a power cord, a power socket, a 433 MHz wireless transceiver, and a microcontroller unit (MCU);
• and
• a battery powered remote control includes a plurality of buttons, an MCU, a 433 MHz wireless transceiver, and a display;
• wherein in response to pressing one or more of the buttons, the MCU of the remote control processes an instruction and instructs the 433 MHz wireless transceiver of the remote control to send out a first radio frequency (RF) signal representing the instruction to the 433 MHz wireless transceiver of the host, the 433 MHz wireless transceiver of the host sends the received first RF signal to the MCU of the host, and the MCU of the host reads the first RF signal and causes an electric heater connected to the power socket to respond according to the instruction and wherein a response signal confirming response of the electric heater to the instruction is encoded into a second RF signal by the MCU of the host, the MCU of the host sends the second RF signal representing the confirming response to the 433 MHz wireless transceiver of the host, the 433 MHz wireless transceiver of the host transmits the second RF signal to the 433 MHz wireless transceiver of the remote control, the 433 MHz wireless transceiver of the remote control sends the received second RF signal to the MCU of the remote control, and the MCU of the remote control decodes the second RF signal and sends information contained in the decoded second RF signal and displays the confirming response on the display.