Novel electricity-saving concept using a radio technique for indoor lighting

This study proposes a novel concept for designing a radio switch that can match workplace characteristics and personal needs by individually controlling the lighting group to save electricity. We use a microcontroller that can achieve the function of timing, turned-on and turn-off by setting the internal program to control the radio switch for convenient use, and electricity saving. As compared with the traditional mechanical switch, the radio switch reduced the electricity consumption by 38.64 kwh/week (86.25% of ideal condition or 1194.62% of practical condition), and the annual CO₂ emission can be reduced by 1032.2 kg/year. Additionally, the cost of the radio switch to replace the traditional mechanical switch can be paid back in 1.72 years.