... such as barcode function. SMS, T9 input, work code enable user-friendly,. offer a wide selection in authentication ... grouping, and unlocking combination function professional. Easy integration with door lock system.Communications:Versatile interface options including: RS232, RS485, ... A multimediaLED:red, GreenLCD:3.5 TFTStandard function:work code, SMS, T9 input scheduled bell. Timing state switch ...