The HID Signo 40 Reader is a user-friendly access control device that can be effortlessly installed onto a wall switch box. It has a surface detection feature that initiates automatic recalibration to optimize the read range performance. The reader is equipped with HID Mobile Access� via Bluetooth or Near Field Communication and supports multiple frequency technologies. Additionally, it comes with energy-saving mode to reduce power consumption when idle and is fully compatible with HID Reader Manager. Easy installation on wall switch boxAutomatic recalibration for optimized read range performanceEnergy-saving mode to reduce power consumption