TM 777A Time Clock

Sierra's TimeMaster TM 777 time clockThe TM777/A time clock functions as a simple to use data collection point for employee information. It can be linked to a variety of existing computer networks in your organization to complement the management information systems you already have in place. The TM777/A guarantees accurate, reliable input. Employees simply enter information through the TM777/A’s keypad, by swiping a magnetic stripe or bar code badge. Employee feedback is provided through audible accept/reject tones and displayed messages. By automating your data collection process, you can eliminate the manpower and mistakes associated with conventional time cards thereby reducing both payroll costs and errors.

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This time clock can be connected to one of the following communication networks

Ethernet – For this type of communication, an IP address is defined for every terminal, enabling communication with each terminal in TCP/IP protocol.
Wi-Fi – For this type of communication an SSID is specified to authorize the connection.

Battery Back Up:

The terminal has two back-up battery modules, one for the real time clock memory and the other for operation during a power failure.

The standard memory back-up module is a lithium battery, which will keep the internal clock running and the memory intact, for 30 days during a power failure.

The back-up battery provided (in addition to the standard memory back-up) is a self-recharging system which allows the time clock to operate during a power failure. The battery provides power for one and a half net hours of use. A shut down timeout feature enables the terminal to operate for more extended periods of time.

During a power failure, the user presses the battery key to activate the terminal. Data can then be entered and stored in the terminal memory. The time-out will cause the terminal to shut down automatically after the last use of the terminal, until the battery key is pressed again.


As a standard feature, the terminal contains a 512 Kbyte user memory, providing storage for data from more than 10,000 simple operations. This number depends on the length of the programming tables contained in the memory, and the complexity of the collected data.