Imou DB11, Black, Silver, Wireless, 2.4 GHz, IP55, AC, DC, 16 - 24 V Imou DB11. Product color: Black, Silver, Connectivity technology: Wireless, Frequency band: 2.4 GHz. Power source type: AC, DC, AC input voltage: 16 - 24 V. Width: 1.85" (47 mm), Depth: 1.15" (29.3 mm), Height: 4.69" (119 mm). Quantity per pack: 9 pc(s)