AT89S52 Digital Clock Module

Feature: SCM: AT89S52 Power supply voltage, miniUSB, an external 5 v voltage 3 v button battery for clock chip on the board of the standby power supply Bluetooth parameter: Communication protocol bluetooth 2.0 , support android 2.0 to android 4.0 phone equipment matching connection (temporarily does not support the Apple mobile phones, Nokia, Sony mobile phone connection). The android version of the mobile phone can generally on “about phone” view it Communication distance: open communications within the environment can be up to 10 meters Function: 1, the clock calibration, and automatically by the calibration on the phone at the same time 2, alarm clock setting 3, temperature display and report 4, according to the current date 5, the second hand rotation pattern is optional 6, hour function, can according to their own work and rest time to time choose to set the hour 7, wireless remote operation, easy and convenient 8, After Power Failure, the clock automatically enabled backup battery, Don’t calibration when again on electricity