1. Time Synchronization Methods

(1) BeiDou/GPS Satellite

Receives BeiDou/GPS satellite signals to obtain standard time;

Currently, there are over 50 BeiDou/GPS satellites, providing wide coverage;

Only a few minutes of signal reception per day is needed for time synchronization;

Suitable for outdoor, mountainous, remote areas, sea, islands, etc.;

(2) CDMA Network Time Synchronization

Receives signals from China Telecom CDMA base stations to obtain standard time;

Time synchronization is possible wherever China Telecom's Tianyi mobile phones can receive signals;

China Telecom currently has hundreds of thousands of base stations, providing good signal coverage;

Suitable for cities, towns, densely populated areas, indoor and basement locations.

(3) Network Time Synchronization

Accesses time servers on the internet or local area network to obtain standard time; 

Automatically sends requests to the server after each power-on;

Direct network connection, connected to a router on the local area network.

2. Automatic Time Synchronization

Automatically eliminates accumulated time drift errors by receiving satellite signals, requiring no manual adjustment;

3. Other Features

(1) Automatic correspondence between Gregorian and Lunar calendars, automatic adjustment for leap years and months with different numbers of days, and display of hours, minutes, and seconds;

(2) Built-in Lithium Battery

Can maintain internal clock operation for 5 years in case of power outage;

(3) Accurate Timekeeping

Even without receiving satellite signals, the cumulative error is < 3 seconds/month (0℃~25℃);

(4) Temperature Measurement and Display

Temperature display range (-9~50℃). 

(5) Reliable and Stable

Uses an EMI power filter, unaffected by power fluctuations.