l. Input password by keyboard, easy and safe. 2. Function of Alarm. 3. Networkable, suitable for hotel managing. 4. Integrative design and modern style Basic Parameter Volume: 418mm?30mm?50mm Pack Volume: 428mm?40mm?60mm Weight: 19kg Color: Gray Work temperature: -40癈～+70癈 Work humidity: 10-98%RH Read Card Type: ID Communication: RS485 Electric Parameter Input Voltage: DC6V Static Current: < 50mA