Dahua Technology HAP320, Microphone, Universal, Dahua, White, Metal, 100 Ω Dahua Technology HAP320. Type: Microphone, Placement supported: Universal, Brand compatibility: Dahua. Connectivity technology: Wired. Power consumption: 60 mA, Input frequency: 20 - 20000 Hz. Diameter: 3.15" (8 cm), Height: 0.787" (20 mm), Weight: 6 oz (170 g). Quantity per pack: 1 pc(s)