Features: Made of high quality ABS material,durable in use. Professional manufacturing, high sensitivity, high reliability. This intelligent door access control machine is easy to operate and very practical. Easy to install, suitable for most locking device or access control system. It is suitable for residential areas, office spaces, conference rooms. Specifications: Condition: Brand New Material: ABS+PMMA panel Product Name: Attendance Access Control Working voltage: DC 8-35V Machine power consumption: less than 3W Data storage: more than 10 years (after power off) Card type: EM or EM compatible card Communication method: 122x32DOTS Authentication method: password, credit card, card plus password Working humidity: 0-95% Working temperature: -20 degrees to 70 degrees Card reading distance: 5-10CM Size: Approx.120*88mm/4.7*3.5in Weight: Approx.252g/8.9oz Package List: 1 * Access Control Machine (1 * Disc, 1 * Manual, 3 * Wire Head, 1 * Screw) 10 * Blue Keychains 1、Made of high quality ABS material,durable in use. 2、Professional manufacturing, high sensitivity, high reliability. 3、This intelligent door access control machine is easy to operate and very practical. 4、Easy to install, suitable for most locking device or access control system. 5、It is suitable for residential areas, office spaces, conference rooms.