How to Take Over an Existing Alarm System

Why this matters

A takeover is the cheapest new account a dealer can win: the wire is already in the walls and the customer already wants monitoring. It is also the job where a tech is most likely to inherit somebody else's mistake and put the shop's name on it. A zone programmed as the wrong type, a smoke detector reporting as a burglary, a communicator still reporting to the old dealer, a panel nobody can program: each of those becomes your problem the moment your station starts monitoring the account. This card is the order that finds them before you take responsibility, with one real takeover filled in as it went.

Step 1: settle who owns what, before any tool comes out

Ask the customer two questions and get the answers in writing on the work order.

Do they own the equipment? Panels installed under a monitoring contract are sometimes leased, and the previous company may still own the panel, the communicator, or both. A bill of sale, a paid-off contract, or a purchase from a previous homeowner who owned it outright are the usual proofs. If the customer does not own it, stop and let them sort it out with the previous company. Reprogramming equipment the customer does not own is not your call to make.

What is the status of the old monitoring? A customer may still be under contract with the previous company. Whether and how they can end it is a question for the customer and, if they want one, their own attorney; the shop does not advise on it and does not contact the previous company on the customer's behalf unless the customer asks. What the shop does need is the operational fact: is the old station still monitoring, and will it dispatch on signals the takeover generates?

The sequencing that avoids a gap. The safest order is for the customer to cancel the old monitoring effective after your new account is confirmed receiving signals, so the house is never unmonitored and never monitored twice by stations that do not know about each other.

Step 2: get the old account on test

Until the new account exists, you cannot put it on test at your own station, because there is no account there yet. If the old station is still monitoring, the customer calls them and asks for the account to be placed on test for the visit window, and gives you the confirmation. Takeover work trips doors, opens tampers and power-cycles the panel, and an old station that does not know you are there will dispatch on it. If the customer has already cancelled and the old station confirms monitoring is off, write that down instead.

Step 3: record everything before you try to get into programming

Why before: the most common way into a panel with an unknown installer code is a factory default, and on many panels defaulting erases the programming, including zone types, descriptors, and on some families the wireless enrollments. Record what is there first.

From the keypad, read the zone descriptors and fault each zone to see which number it is: open each door, wave at each motion, and note what the keypad names. Read wireless device serial numbers off each device's label. Note the communicator type and who it reports to, if the label or keypad shows it. Read the battery's date and test it under load per How to Replace an Alarm Panel Battery and Load Test It.

Step 4: try the installer code, then the panel's reset path

Try the panel family's default installer code from the manual. Previous installers often never changed it. If it fails, the panel's manual describes its recovery path, which is commonly a power-up window during which a default code works, a jumper or button that restores factory programming, or a programming tool connection. Some panels carry an installer lockout that blocks every field reset; on those, the options are the previous dealer releasing the code, or replacing the panel. That case is worked in full in The Takeover Panel With the Locked Installer Code.

Power-cycling the panel to reach a power-up window means unplugging the transformer and lifting one battery lead. Keep the loose battery lead's terminal off the enclosure; a sealed lead-acid battery will arc and burn through a short.

Step 5: the inventory

This is the takeover from the field that this card follows: a two-story house, a hybrid panel with wired zones and a wireless receiver, previous homeowner's system, customer bought the house two years ago.

TAKEOVER INVENTORY - 18 ELM CT
Panel family    hybrid, 8 wired zones + wireless
Firmware        read at keypad before any reset
Installer code  default rejected; power-up
                default window per manual: worked
Ownership       came with house, owned outright
Old monitoring  customer cancelled; old station
                confirms not monitoring
Communicator    cellular, activated under old
                dealer: cannot be moved
Battery         7 Ah, dated 7 yrs ago, 12.3 V
                to 11.4 V in 15 min: replace

ZONE  TYPE AS FOUND   LOCATION         DEVICE
01    entry/exit      front door       recessed
02    entry/exit      garage entry dr  recessed
03    perimeter       back slider      surface
04    interior        living room      motion
05    perimeter       kitchen window   surface
06    interior        upstairs hall    motion
07    24-hr burglary  hall ceiling     4-wire smoke
08    not used        -                disabled
17    perimeter       basement door    wireless
18    24-hr panic     key fob          wireless

Three findings came out of that sheet, and each changed the job:

Zone 07 was a smoke detector programmed as a 24-hour burglary zone. When it tripped, the station would have received a burglary alarm and dispatched police to what was actually a fire. That is a fire-side correction, and fire alarm work is separately licensed in many states and localities. On this job the shop held the required license and the zone was reprogrammed as a fire zone and tested with a listed smoke aerosol per the detector's maker. Where your shop does not hold it, the zone goes to a licensed fire alarm contractor and the customer is told in writing that the detector is not yet monitored as fire; see related: Combination Fire and Burglary Panels and the License Line. Zone types and what each does on a trip are owned by Zone Types and What Each One Does When Tripped.

The communicator could not be transferred. The radio was activated under the previous dealer's provider account. Some providers will transfer a radio between dealers and some will not; this one would not. A new communicator went on the job, and the old one was disconnected and left with the customer, since it was theirs.

The battery was dead. Seven years on its date, and a 0.9 V drop (12.3 V to 11.4 V) in 15 minutes on the panel's own standby load. Replaced before any testing, because a weak battery during a power-cycle or a test can produce troubles that look like wiring faults.

Step 6: walk test every zone locally

With programming open, run the panel's walk test or simply fault each zone while watching the keypad. Every zone on the sheet must fault and restore with the right number and the right name. On this house, zone 05 never faulted at the keypad when the window opened: the surface contact's magnet had come off the sash and been painted onto the frame beside the switch, so the window opened without moving it. A magnet remounted on the sash fixed it. Finding that now is the point; under the new account it would have been a window the customer believed was protected.

Step 7: open the new account and swap reporting

Open the account with your central station, with the zone list from the inventory, corrected: zone 07 as fire, every descriptor matching the location. Program the panel's account number and reporting format to match, and activate the new communicator under your dealer account.

Then close the previous company's doors into the panel:

• Remote programming access. Many panels allow downloading or app access through a provider service. Remove the old dealer's access so nobody outside your shop can reprogram the system.
• Installer code. Change it from whatever it was to your shop's code, handled per the shop's code policy; see related: The Installer Code and Customer Passcode Handling SOP.
• User codes. The previous homeowner's codes may still work. Delete every user code the customer does not recognize and have the customer set their own.

Step 8: the finish test, every zone to the new station

Put the new account on test with your station, then trip every zone on the inventory in order and confirm each arrives at the station with the right zone number and the right description. The procedure and the log that goes with it are owned by How to Walk Test Every Zone with the Central Station.

On this house every active entry on the sheet was tripped: seven wired zones (the eight less the unused 08) plus the two wireless devices, nine signals in all, and all nine arrived matching the sheet, including zone 07 now reporting as a fire alarm. The account came off test after the station confirmed the last restoral, and the customer then confirmed in writing that the old monitoring was cancelled.

Where takeovers go wrong

Treating the as-found zone types as correct. The inventory records what IS programmed, not what should be. Every 24-hour zone, every fire zone and every device in a wet or cold location deserves a second look, because a previous installer's choice is now your liability.

Defaulting before recording. A defaulted panel with no zone list means re-learning the house by tracing wire, and losing every wireless enrollment means visiting every sensor with its serial number.

Leaving the old dealer's remote access in place. It is invisible on the keypad and it is the one door the customer cannot close themselves.

References

• Panel manufacturer installation and programming manual: default installer code, reset path, installer lockout.
• See related: The Takeover Panel With the Locked Installer Code
• See related: How to Walk Test Every Zone with the Central Station
• See related: Zone Types and What Each One Does When Tripped
• See related: Combination Fire and Burglary Panels and the License Line