Infrared remote control:

Using infrared light with a wavelength of 760nm-1mm to transmit signals requires a dedicated codec chip to achieve control functions
The transmitting end generates pulse modulation signals through infrared light-emitting diodes, and the receiving end decodes them through photoelectric converters

RF remote control:

Using radio waves in the 30kHz-300GHz frequency band for signal transmission, supporting multi-path propagation such as reflection and scattering
No need for physical alignment, signal coverage can be achieved by emitting electromagnetic waves through an antenna

Core performance differences

Transmission characteristics:

Infrared: Effective distance of about 5-10 meters, strictly aimed at the receiving end, unable to penetrate obstacles
RF: Transmission distance can reach 30-50 meters and can penetrate non-metallic obstacles such as wooden boards and gypsum boards

Anti interference capability:

Infrared: susceptible to strong light sources such as sunlight and incandescent bulbs, but with less interference in dedicated frequency bands
RF: It needs to deal with complex electromagnetic environments such as Wi Fi and Bluetooth, relying on encoding and encryption technology to ensure stability

Power consumption and cost:

Infrared: Simple structure and low cost (about 1-5 US dollars), but high power consumption (battery replacement required annually)
RF: The module cost is relatively high (about 5-15 US dollars), but the power consumption is low (button batteries can last for 3-4 years)

Typical application scenarios

Infrared remote control:

Traditional household appliances such as television and air conditioning (requiring direct visual operation)
Remote control of conference equipment (projector, electric screen)

RF remote control:

Smart home (smart door lock, curtain control system)
Industrial equipment (requiring through wall control or remote operation)