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Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019
USA
P. 540-563-2000
F. 540-362-9800
www.valcom.com
Frequently Asked Questions
VERY IMPORTANT:
INSTALL, POWER, AND SET YOUR MASTER CLOCK OR REPEATER BEFORE POWERING THE SECONDARY
WIRELESS CLOCKS
A Valcom Master Clock and any Repeaters must be installed, powered, and set up BEFORE you attempt to
set up a wireless clock system. If the Master Clock and Repeaters are not properly installed and powered, the
secondary clocks will not synchronize.
What battery size do I use for the battery-powered clocks?
Wireless battery-operated clocks use two “D” cell batteries. Duracell Procell D Alkaline Batteries have been
found to produce the best results.
What size utility/gang box is needed?
A standard single gang box is required for wall mounting a locally-powered version of the clock. However,
if you are installing a locally-powered double mount clock, then a standard double gang box is required.
Will the wireless clock cause interference with other wireless devices?
No. Valcom Wireless Clocks work on 915-928 MHz frequency-hopping technology, which allows the clock
transmitters to avoid interfering with other devices operating on those frequencies.
What advantages are there to having a locally-powered wireless clock instead of a battery-
operated one?
Locally-powered wireless clocks transmit synchronization signals every minute and can receive signals at
any time. Battery-powered clocks receive and transmit signals once every two hours at most. Less time
between synchronization signals means a greater guarantee of timekeeping accuracy.
Do I gain any advantages by having more than one transceiver on a locally-powered wireless
clock system?
Additional transceivers are only useful if you must mount a clock beyond the range of all other wireless
clocks. If all the clocks in the system are in range of each other, then there are no additional benefits from
having more than one primary transceiver.
How long does it take for a clock to receive a signal?
On initial power up, the clock will open its receiver for ten minutes until the signal is acquired. If everything
is installed correctly and the transponder is open, the clock should get the signal within five minutes. If
the user wants to manually cause the clock to do this, please refer to “Manually setting a connection
between two or more Valcom Wireless Clocks“ under the section “Synchronization system setup”. Once
the clock has been synchronized, time correction is based on the clock’s power source and settings.
• If the clock is locally-powered, it will attempt to acquire a time signal at all times.
• If the clock is battery-powered and in Standard mode, it will attempt to acquire the time signal once
every two hours.
