ELPA Video Door Wireless No Wiring Automatic LED Battery Operated DHS-TMP2320 Phone, Intercom, Required, Recording, Wide-Angle Camera, Light,

[Entrance Camera Sub-Unit DHS-C22] ■ Power Supply: 4 AA alkaline batteries (sold separately) / or DC 7V supply from the monitor parent unit ■ Battery Life: Approximately 8 months (when used for 20 seconds at a time, 5 times a day, at 21°C) ■ Operating Environment: -10°C to 50°C, 90% or less ■ Installation: Surface type: JIS single-unit switch box (with cover) compatible ■Wireless communication method: 1.9GHz DECT compliant ■Shooting angle: (Horizontal) approx. 130° (Vertical) approx. 90° ■Night shooting method: Visible light LED ■Minimum subject illumination: 2lx ■External dimensions (approx.): W100 x H128 x D34 (mm) (maximum) ■Weight: Approx. 210g (excluding batteries) ■Water resistance: IPX4 (splash-proof) [Monitor parent unit DHS-B30M] ■ Power supply: AC100V 50/60Hz (cord length approx. 1.5m) ■ Power consumption: (standby) approx. 0.8W / (during a call) approx. 3.1W ■ Operating environment conditions: 0 to 40°C, 70% or less ■Installation: Surface mounted (bracket included) ■Wireless communication method: 1.9GHz DECT compliant ■Usable distance: Line of sight approx. 100m