railway RRB JE (CBT I + CBT II) Mock Test 2024 Sensors and Industrial Instrumentation Measurement of Temperature
A ________ in the electric kettle can turn itself on and off when required without troubling you, even when you are away. It is not just cost-saving, also something that would help you do your bit towards energy conservation.
1
programmable thermostat
2
programmable watch
3
programmable speaker
4
programmable radio