90pcs time clock

Description: DS1307 I2C real time clock chip (RTC) 24C32 32K I2C EEPROM memory Using CR2032 lithium battery Leads to the DS1307 clock pin provides a clock signal for the microcontroller Other I2C devices can be cascaded Size: 27 x 28 x 8.4mm Package included: 10 x DS1307 real time clock module

Feature:   This is a real time clock (RTC) based on IC DS1307 that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost.  Use for data-logging, clock, timers and alarms.  The DS1307 can be easily connected to the Arduino, with I2C bus interface.   Package includes:   5 x Real Time Clock Module with battery

Description: DS1307 I2C real time clock chip (RTC) 24C32 32K I2C EEPROM memory Using CR2032 lithium battery Leads to the DS1307 clock pin provides a clock signal for the microcontroller Other I2C devices can be cascaded Size: 27 x 28 x 8.4mm Package included: 1 x DS1307 real time clock module

5Pcs I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC SMD Description: 24C32 32K I2C EEPROM memory Using LIR2032 rechargeable lithium battery with charging circuit Solve the problem of no literacy of the DS1307 with backup battery Support timing 1 year of the DS1307 after fully charged Leads to the DS1307 clock pin provides a clock signal for the microcontroller Other I2C devices can be cascaded Size: 27 x 28 x 8.4mm Note: Because of shipping restrictions, we won't ship battery Package included: 5 x DS1307 module (battery is not included)

10Pcs I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC SMD Description: 24C32 32K I2C EEPROM memory Using LIR2032 rechargeable lithium battery with charging circuit Solve the problem of no literacy of the DS1307 with backup battery Support timing 1 year of the DS1307 after fully charged Leads to the DS1307 clock pin provides a clock signal for the microcontroller Other I2C devices can be cascaded Size: 27 x 28 x 8.4mm Note: Because of shipping restrictions, we won't ship battery Package included: 10 x DS1307 module (battery is not included)

*LOCAL STOCK* 2.8" Screen Fingerprint Password Attendance Time Clock Recorder Free Software with USB, U-Disc   The Key Features: Adopting the most advanced fingerprint algorithms, the identification ability to the fingerprint under the change of environment, climate and a finger injury, peeling fingerprint has been significantly improved and it can distinguish in one second under a full fingerprint state. We are the first to use the intelligent sensor energy-saving fingerprint reader in the industry, along with the advanced power management features, so it can reduce the energy consumption effectively. The fingerprints intelligent learning update function can implement registered for one time and use for a whole lifetime, easy and convenient to use. The using of a 2.8 inch TFT color display screen will makes your interface operation intuitive and clear. Support U disk to download attendance records and fingerprint data and other functions. The user's fingerprint can register in one machine register and share by a U disk, no need to connect to a computer in real time.       Click here to view all our stunning items

Zkteco Portable Time Clock Tcp / Ip "IDEAL TO MONITOR STAFF ATTENDANCE FOR BUSINESS ON THE GO"   DESCRIPTION: IP65 Rated Shock-resistant up to 1m from ground 3.5-inch colour TFT screen Less than 1 second user recognition Stores 5000 templates and 200000 transactions Built-in USB port allows for manual data transfer Reads Fingerprint and/or Pin’s and/or RFID card Wi-Fi communication Backup battery Audio - Visual indication for valid / invalid entries   Integrated 125kHz RFID proximity reader  

PINOUT: http://img.banggood.com/file/products/20171226001032PINOUT-RTCDS1307.pdf Schematic: http://img.banggood.com/file/products/20171226001140Schematic-RTCDS1307.pdf Feature: Type: Logic ICs Package includes: 5 x RTC DS1307 (real time clock) + battery 5 x Wemos D1 mini shield 10 x Male Pin Header 8pins 10 x Female Pin Header -BLACK 8pins 10 x Stackable Header - BLACK 8pins

3Pcs I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC SMD Package contains 1 X item of the smallest listed variant.

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