Inventor from Telangana's Warangal district creates Light Dependent Resistor to save power. Witnessing its success, over 2,000 LDR devices have been set up in 600 gram panchayats of Hanamkonda, ...

The hybrid street light is available in 20 W, 40 W, and 60 W versions. “The light-dependent resistor (LDR) in the street light enables an automatic switch on/off.