Lathem Clock Replacement - Lathem Clock Alternative

Replacing Your Clock

In recent years, mechanical movements used to repair or replace traditional Lathem clocks have become obsolete. We still offer some clocks with mechanical movements, such as impulse clocks, but in most cases we recommend upgrading to current clock technology. Lathem built a few different types of clocks. To find out which kind you have, look for the original model number on the back of the clock. If the clock is synchronous wired (SS prefix), identify the voltage. If the clock is minute impulse (ISC prefix), specify whether 2- or 3-wire.

Compatibility

Lathem brand analog clocks are described by a prefix followed by a 6- or 7-digit model number.

SS (Synchronous Wired Secondary) may also be preceded by (24)
NAT – Similar to SS clock, compatible with National Time System
ISC (Minute Impulse Secondary Clock) specify 2- or 3-wire and if 12 hour correction is desired

Precision, Energy Efficiency and Flexibility with Lifetime Technical Support

AllSync Plus clocks are available in many more styles than their counterparts. When replacing Lathem SS Series clocks, the choice of case material and style is up to you!

Plug-n-play Molex Connection
Accurate to within one second of the system controller
15 minutes of continued operation during power outages
3-Year warranty

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“There were two or three clocks on my workbench at all times.”

Even just to repair a clock, the guts aren’t cheap and sometimes it would take me an hour to fix it. Now, maintenance has gone down to about nothing.

- Tony D. - Buildings and Grounds Director

HOURLY CORRECTION	12-HOUR CORRECTION
7-9 seconds starting at the 57th minute and 54th second	13-18 seconds starting at 5:57:54 (am and pm)
24-28.5 seconds starting at the 0 minute and 0 second	24-32 minutes starting at 6:00:00 (am and pm)
54-56 seconds starting at the 58th minute and 5th second	10 pulses of 94-96 seconds starting at 5:05:00 (am and pm) repeating every 2 minutes
24-26 seconds starting at 0 minute and 0 second	25 pulses of 24-26 seconds starting at 6:00:00 (am and pm) repeating every 60 seconds
63-67 seconds starting at the 58th minute and 0 second	14 pulses of 63-67 seconds starting at 5:06:00 (am and pm) repeating every 2 minutes
54-56 seconds starting at the 58th minute and 5th second	12 pulses of 63-67 seconds starting at 5:05:00 (am and pm) repeating every 90 seconds

Select the correct type.

Impulse clocks come in 2- and 3-wire models and with hourly only or hourly and 12-hour correction.

Look for the two-letter code in the model number when selecting a replacement clock for your Simplex system:

[FF] 2-wire, hourly correction

[FG] 2-wire, hourly and 12-hour correction

[JF] 3-wire, hourly correction

[JG] 3-wire, hourly and 12-hour correction

Shop Impulse Clocks

Upgrade your wired system today.
Transition to wireless for tomorrow.

You may just need a replacement clock or some repair kits to keep your wired system running today. But, there is another way.

By switching to a hybrid wired/wireless controller, you can prepare for tomorrow. Wireless systems give you the flexibility to add any number of clocks. Hang them wherever you need them without the expense of wiring another circuit.

Need advice? Talk to an expert.

From maintaining to upgrading, we can help you through each consideration.

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Upgrade An Outdated Lathem Clock System

Replace a Lathem controller or signaling device. Repair or replace secondary analog clocks on the system.

Replacing Your Clock

Compatibility

AllSync Plus Wired Clocks

Precision, Energy Efficiency and Flexibility with Lifetime Technical Support

“There were two or three clocks on my workbench at all times.”

Repair Your Existing Clocks with a Replacement Movement Kit for Lathem Clocks

Our American Time AllSync Plus clocks are compatible with these correction signals.

Replacements For Lathem Impulse Clocks

Select the correct type.

Upgrade your wired system today.
Transition to wireless for tomorrow.

Need advice? Talk to an expert.

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About Us

Upgrade An Outdated Lathem Clock System

Replace a Lathem controller or signaling device. Repair or replace secondary analog clocks on the system.

Compatibility

Precision, Energy Efficiency and Flexibility with Lifetime Technical Support

“There were two or three clocks on my workbench at all times.”

Select the correct type.

Upgrade your wired system today. Transition to wireless for tomorrow.

Need advice? Talk to an expert.

Upgrade your wired system today.
Transition to wireless for tomorrow.