Kasilingam G, Nithiyananthan K, Ramesh Mani P, Thomas S. GSM based dual power enhanced LED display notice board with motion detector. IJET [Internet]. 2018 Mar. 19 [cited 2024 Nov. 25];7(2.8):559-66. Available from: https://sciencepubco.com/index.php/ijet/article/view/10521