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The flush-mount digital clock is designed to be mounted into a wall cavity, similar to a single 
or double gang box. Ensure that installation conforms to the National Electrical Code and 
local wiring codes.

NOTE:  If installing the clock to be used with a Timer Control Station, the clock and TCS 
must be no more than 30-ft apart.

CAUTION: Electric Shock Hazard! 
Ensure that NO electrical power is 
present on any wire before installation.

1. Remove the four sheet metal screws 
(C) that hold the cover assembly (B) 
and enclosure base (A) together. Be 
sure to keep the sheet metal screws for 
reassembly.
2. Mount the enclosure base (A) into the 
wall by attaching the side of the back box 
to a stud. Opening is 12.75" x 7.75" x 
3.625".

If you are installing a Timer Control Station, proceed to Step 3.  To finish clock installation 
without a Timer Control Station, proceed to Step 6.

3. Pull the wiring from the Timer Control Station through the knockouts in the enclosure. 

4. Connect the Timer Control Station wiring to the provided terminal plugs.  See wiring detail 
in the ATSTCS documentation for detailed wiring information.

5. Connect the terminal plug(s) to the terminal blocks on the clock as described in the 
ATSTCS documentation.

6.

 

Pull the CAT 5 or higher Ethernet cable (D) through a knockout in the enclosure.

7.  Connect the Ethernet cable to the RJ45 jack on the clock's circuit board.  The clock should 

power on and obtain a connection, displaying a time within 45 seconds.

8. Re-attach the cover assembly (B) to the enclosure base (A) using the sheet metal screws 
(C) removed in Step 1.
 

Specifications

PoE

Weight

6.5 lbs (3 kg)

Box Dimensions

12.625" x 7.325" x 3.5" WxHxD (32 x 

18.6 x 8.9 cm)

Faceplate Dimensions

13.5" x 8.5" WxH (34.3 x 21.6 cm)

Code Blue Current

3.0mA maximum at 12-30VAC/VDC

Operating Temperature

30°-104°F (0°-40°C)

Humidity

95% relative humidity at 86°F (30° C) 

maximum, non-condensing

Display Modes

12-hour or 24-hour, user-configurable

Accuracy 

±1 second

Certifications

Electromagnetic Emissions 

EN 55032:2012/AC:2013 Class B 

FCC 15.107:2018 Class B 
FCC 15.109:2018 Class B 

ICES-003:2016 Class B

Power Consumption (red digits)

Average

Max

2.5" 6-digit

6.5W

8.0W

4" 4-digit

5.5W

7.0W

General Maintenance

American Time digital clocks require minimal maintenance.  Cleaning should be done with 

nothing more than a microfiber towel, moistened with water or a mild alcohol solution.  No 

abrasive materials should be used to clean the clock, as it will result in scratching of the 

case or lens.

Avoid contact with the internal components of the clock when unpacking or preparing 

for installation, or if the clock is disconnected after installation.  Contact with the internal 

components when the clock is not grounded can result in electrostatic discharge, which 

could damage the clock.

Installation

A

B

C

D

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