Compliance certificates: RoHS Maximum number of cameras supported: 1 Speakerphone: Yes Number of displays supported: 1 Colour: Yes Built-in microphone: Yes Wall mountable: Yes Connectivity technology: Wireless Frequency band: 2.4 - 2.4835 GHz Product colour: Gold Power consumption (typical): 2.2 W Operating temperature (T-T): -10 - 45 °C Operating relative humidity (H-H): 0 - 95% Depth: 48.3 mm Door station dimensions (WxDxH): 115.5 x 85.5 x 24.5 mm Height: 71 mm Width: 71 mm Weight: 302 g Wi-Fi: Yes Wi-Fi standards: Wi-Fi 4 (802.11n) Outdoor unit included: Yes Indoor unit included: Yes Mounting kit: Yes Display diagonal: 10.9 cm (4.3") Built-in speaker(s): Yes Number of speakers: 1 Compatible memory cards: MicroSD (TransFlash) Memory card slot: Yes Maximum memory card size: 512 GB Motion sensor detection angle: 110° Motion sensor distance: 6 m Motion sensor: Yes Motion sensor technology: Passive infrared (PIR) sensor Maximum frame rate: 15 fps Sensor type: CMOS Maximum video resolution: 1920 x 1080 pixels Optical sensor size: 25.4 / 3 mm (1 / 3") Megapixel (approx.): 2 MP Quantity per pack: 1 pc(s) Night vision: Yes