Spend more time doing the things you love and less time doing the things you have to do. Select a clock with a Battery Booster Pack and you won't have to change the batteries for the next 5 years.

 The newly redesigned Battery Booster Pack is securely mounted and registered with 2 studs on the back of each clock.

We'll ship your clocks with the batteries already installed for 5 years of trouble-free operation. 


When the batteries do wear out, either replace the whole pack or remove the cover and install 6 fresh batteries.

Saves you time. Saves you hassle.  


 American Time Clocks with Battery Booster Pack 

Wireless Wi-Fi Stand Alone

  • Time sync from master clock
  • Automatic Time adjustment
  • Battery Booster Pack included
  • Time sync from internet time server
  • Automatic Time adjustment
  • Battery Booster Pack included

  • Only radio controlled receives time sync
  • Automatic Time adjustment product dependent
  • Battery Booster Pack optional



Wireless Battery Clocks


Wireless clocks stay synchronized by receiving information from a system controller, otherwise known as the master clock. The master pulls its time from either an Ethernet connection, GPS satellite or cell phone tower. Then it broadcasts a wireless signal to these secondary clocks that receive it through an antennae.

American Time's SiteSync® system controller is designed to transmit a signal that's strong enough to cover an entire facility or campus.

Wi-Fi Battery Clocks

Wi-Fi clocks don't require a master to keep in sync, but instead rely on your existing 802.11n Wi-Fi network.

Wi-Fi battery clocks "wake up" twice a day, around 2:00 pm and 2:00 am, check in with the time server, then promptly "fall back to sleep" in order to save power. They stagger their wake times for unnoticeable network bandwidth impact.


Then the movement adjusts accordingly to the time received. If you have a Wi-Fi signal, you can have synchronized time.


Stand Alone Battery Clocks


No need for time synchronization? No problem! We have three kinds of stand-alone battery clocks: AllSet®, Radio Controlled and Quartz. 

AllSet automatically adjusts for Daylight Saving Time. It uses a battery-operated quartz movement with an internal calendar to correct the time without the need for signals or antennas. 

Radio Controlled, also known as Atomic clocks, automatically adjusts for Daylight Saving Time. These clocks pick up the signal from the NIST Atomic clock in Ft. Collins, CO and adapt to match it. However, these clocks do require good reception to operate. Ask us for a clock to test in your location by filling out a free 30-day field test form.

Quartz clocks are your standard wall clock. They're very economical and a good option if you only need a few clocks and don't mind taking the time to adjust them for Daylight Saving Time or drift. 

Need some help? Not sure what option is best for your needs?
We can help!
Schedule a Clock Consult >