https://www.scribd.com/document/753249103/imou-cruiser-dual-uraian-penajaman-harga-dan-apakah-patut-dibeli-229800 https://www.scribd.com/document/753249103/imou-cruiser-dual-uraian-penajaman-harga-dan-apakah-patut-dibeli-229800 4 cctv batam tanpa kawat jempolan, jarak jauh