The KR Series is the main accessories line of external Wiegand readers for all ZKTeco access control devices. With an elegant and robust design, they are easy to connect and install, and offer the possibility to control one door from both sides. The LED lights indicate allowed or denied access. They have a proximity reading range of up to 10 cm in the E series case and up to 5 cm in the M series case. The fact that this series is waterproof, and the operating temperatures can range from -20 degree to +65 degree, it is the ideal solution for outdoor installation. Also they can be connected with ZKTeco C3 controllers.