KR101M is easy to connect and install, and offers 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 10cm in the E series case and up to 5cm in the M series case. The fact that this series is waterproof, and the operating temperatures can range from -20º to +65º, it is the ideal solution for outdoor installation. Also they can be connected with our C3 controllers.