The REALTOR® Lockbox
The REALTOR® Lockbox Owner’s Guide
Owner’s Guide •
46
How to Replace the Battery
The REALTOR® Lockbox NXT uses two internal lithium batteries. The battery in the NXT series lockbox
should last between 5 and 6 years under normal operation. Extended operation at high temperatures or
excessive mechanical cycling of the latching mechanism may shorten battery life.
The two blue CR123A batteries, that are factory installed when you receive your new or reconditioned lockbox,
are specially formulated to last longer and to operate in much colder conditions than batteries that can be
purchased at most consumer electronics stores and office supply stores. If battery life and operating at cold
temperature are a concern we recommend purchasing our batteries through our on line store.
Sentrilock’s
guarantee of performance at the specified temperatures only applies if Sentrilock supplied batteries
are used.
Note: To preserve the battery life, you should lock the keypad when you store or transport the lockbox. Leaving
your SentriCard® in the card slot of your lockbox will shorten the battery life. We recommend using your
SentriCard® to access and program your lockboxes. Do not store your SentriCard® in the card slot of the
lockbox.
When the battery is low, the lockbox will alert the lockbox owner or their card team members. When the
lockbox owner or card team members insert their SentriCard® into the lockbox, it will flash the
MESSAGE
light
20 times. In addition, it will make a series of beeps. The lockbox will continue to operate with a low battery; it is
imperative to replace the batteries as soon as possible. The lockbox uses two lithium type
CR123A
batteries.
This battery type is available at most consumer electronics stores and office supply stores.
Do not remove the old batteries until you have a replacement in hand. Also, do not carry unpackaged
batteries in your pocket or purse as metal objects could cause a short circuit and thereby cause bodily
harm or property damage.
When replacing the battery, it is important to remember the lockbox has a memory backup circuit that will
retain the lockbox settings and timekeeping system while you replace the batteries. This memory backup
circuit will only operate for a few minutes after you remove the batteries. The lockbox owner or their card team
member can use the following instructions to replace the batteries.
1. Insert your SentriCard® into the lockbox, and enter your
PIN
and
ENT
.
2. Remove your SentriCard® to open the lockbox to access the battery cover.
3. Use a
#2 Phillips-head
screw driver to remove both screws that hold on the battery cover (shown in
illustration).
4. Replace both
CR123A
batteries following the polarity (+/-) symbols as indicated on the battery cover.
Warning:
Inserting batteries incorrectly will permanently damage the lockbox or the batteries may
explode! Do not allow the lockbox to close with the batteries removed!
