1. Group Member: Chan Ting Pong 07619773T Cheng Cheuk Yin 07657694T Mok Wai Tung 07600597T Ho Siu Kin 07629394T
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23. Infra red Micro Switch Energy saving Higher (switch on all the time) Lower (only switch on during the cigarette put on the ashtray) Cost Higher Lower Installation Harder Easier