Hikvision DS-KB2421-IM for analog video door phones The DS-KB2421-IM external/outdoor gate/door station is a vandal-proof panel dedicated for use in analog Hikvision video door systems (DS-KIS202 DS-KIS203). The panel is made of zinc alloy and is equipped with a relay dedicated to control an electric strike. The built-in color pinhole camera with resolution of 720 x 576 px and IR illuminator with a range of 2 m ensure correct visibility of the caller even in the absence of lighting. Thanks to small dimensions the panel can be aesthetically mounted even on a narrow metal post. Its IP65 rating guarantees resistance to harsh weather conditions. The connection between the gate/door station and the indoor station/monitor requires a 4-wire cable. Specifications: Name DS-KB2421-IM Code G73405 System Analog Wiring 4-wire Image sensor 1/4″ CMOS Resolution 720 x 576 @ 25 fps Built-in speaker/microphone Yes IR illuminator Yes (range of 2 m) Built-in relay Yes Housing Zinc alloy Vandal-proof Yes IP rating IP65 Power consumption Max. 5 W Operating temperature range -30°C…70°C Dimensions 145 x 49 x 26 mm Weight 0.53 kg Also check Hikvision DS-KH2220 monitor for analog video door phones Hikvision DS-2CD2D21G0/M-D/NF 2MP Mini Network Camera with 2.8mm Pinhole Lens Hikvision DS-KH6320-WTE2 (Wi-Fi for 2nd gen. 2-Wire IP video door