Texecom Premier Elite — Zone Wiring Guide

Purpose

This guide covers how to wire every type of device on a Texecom Premier Elite system: PIR detectors, door/window contacts, external bell boxes, internal sounders, keypads, and zone expanders. It explains EOL resistor wiring in full — including why we use it and exactly how double and triple pole circuits work.

Read this alongside Getting Started — Security Alarms before your first installation.

1. EOL (End of Line) Resistors — What They Are and Why We Use Them

The problem with plain normally-closed wiring

The simplest way to wire a detector is a normally-closed (N/C) loop — a circuit that is closed when everything is fine, and breaks (opens) when the detector triggers. This works, but the panel can only tell you two things: circuit closed (no alarm) or circuit open (alarm). It cannot distinguish between a genuine alarm and someone disconnecting a wire or pulling the device off the wall.

How EOL resistors fix this

End of Line resistors add a known electrical resistance into the zone circuit. The panel continuously measures the resistance of the zone and compares it against four expected values:

By measuring resistance rather than just continuity, the panel can tell an alarm from a tamper from a wiring fault — and report them separately on the keypad. This is a requirement for Grade 2 systems under EN 50131.

2. Double Pole EOL — The Standard Texecom Configuration

Double pole EOL uses two resistors: 4k7 and 2k2. This is the method used on the vast majority of Texecom Premier Elite installations.

Resistor values

These values are built into all current Texecom Premier Elite detectors — you do not need to source or fit separate resistors when using Texecom PIRs. You only need to buy resistors separately when wiring third-party detectors or door/window contacts that do not have them built in.

How the circuit works

Panel          Detector                           Panel
Zone+ ─────────┬────[N/C contact]────┬──[2k2]────── Zone-
               │                    │
              [4k7]                 │
               │                    │
               └────────────────────┘
                   (4k7 in parallel with N/C contact)

Tamper switch is in series in the zone return path.
If tamper opens → circuit fully breaks → Open circuit → panel reports TAMPER

Tracing the zone states:

• Normal: N/C contact is CLOSED → shorts the 4k7 → only 2k2 remains in circuit → panel sees ~2k2
• Alarm: Detector triggers, N/C contact OPENS → 4k7 is no longer shorted → 4k7 + 2k2 both in circuit → panel sees ~6k9
• Tamper: Lid removed → tamper switch opens → full circuit break → panel sees open circuit
• Short fault: Zone wiring shorted together → panel sees ~0Ω

Where to fit the resistors

The resistors go at the detector, not at the panel. Texecom PIRs have both resistors built in — no external fitting required. For third-party detectors or contacts without built-in resistors:

• The 4k7 goes across the alarm contact at every detector
• The 2k2 goes in series at the last detector on the zone only (the end of line)
• Earlier detectors on the same zone do not need the 2k2

Resistor values vary by manufacturer — always match the panel

Different panel manufacturers program their panels to expect different resistance values. A PIR with built-in Texecom resistors (4k7 + 2k2) will not work correctly on a Honeywell panel, and vice versa.

The practical rule:

• Texecom panel + Texecom PIRs: built-in resistors match the panel — connect four cores and it works
• Texecom panel + third-party PIRs: check whether the PIR has built-in resistors, what value, and whether they match 4k7/2k2. If not, add the correct external resistors
• Any other panel: always check the panel manual for its expected EOL values before buying or fitting PIRs. Never assume resistors from one job will carry over to another system

3. Triple Pole EOL

Triple pole EOL adds a third resistor, allowing the panel to detect an additional state — typically used where anti-masking is required (dual-tech PIRs with anti-mask output, or for Grade 3+ systems). Texecom supports this but it requires configuration in Wintex.

Most residential and small commercial jobs are double pole only. Do not use triple pole unless specified — it adds wiring complexity for no benefit on standard Grade 2 installations.

4. Cable Specification

At Wilsons we always run 6-core alarm cable as standard to every device position — detectors, keypads, expanders. The extra cores provide spare capacity and fallback if a core is damaged or a wiring change is needed later. 4-core is the technical minimum but 6-core is our standard on every job.

The four cores in active use:

The remaining two cores are left spare in the device backbox.

5. Wiring PIR Detectors

PIRs are the most common detector on any Texecom installation. They are powered from the panel's +12V auxiliary output and use the zone loop for alarm and tamper signalling.

Built-in EOL resistors

All Texecom Premier Elite PIRs have the 4k7 and 2k2 EOL resistors built in to the PCB. You do not fit external resistors — connect the four cores and the EOL circuit is complete automatically.

Cable colours and terminals

Always check the wiring diagram printed inside the PIR cover — terminal labels vary between models.

Single PIR on a zone

1. Run 4-core cable from panel to PIR position
2. Red → +12V terminal
3. Black → 0V terminal
4. Yellow → Zone terminal
5. Blue → Tamper terminal
6. Blue core returns to panel Zone B — the built-in 4k7 and 2k2 are already in circuit

Multiple PIRs daisy-chained on one zone

Wire in series through the zone loop. Because the resistors are built in to every Texecom PIR, the daisy chain works automatically — just pass the zone and tamper cores through each PIR in turn:

Panel Zone A ─── Yellow ──── PIR 1 Zone ──── PIR 2 Zone ──── PIR 3 Zone
Panel Zone B ─── Blue ──────────────────────────────────── PIR 3 Tamper
                                                            (last PIR closes the loop)

Power (Red and Black) daisy-chains through each PIR as well. Each PIR draws from the +12V run.

6. Wiring Door and Window Contacts

Magnetic contacts are passive devices — they have no power requirement. They are simply a switch that opens when the magnet is moved away (door/window opens).

Single contact on a zone

Panel                         Contact
Zone A ─── Yellow ─────────── Terminal 1 (N/C)
                               N/C switch
Zone B ────────────────────── Terminal 2 (N/C) ─── [2k2] ─── Terminal 2
                    [4k7 across T1 and T2]

Step by step:

1. Run 2-core alarm cable (or spare cores of a 4-core run) to contact position
2. Connect one core to terminal 1 of contact, other core to terminal 2
3. At the contact, fit 4k7 resistor across the two terminals (in parallel with the N/C switch)
4. Fit 2k2 in series in the return core (between contact terminal and panel Zone B)
5. Wire tamper — the contact housing tamper switch connects in series in the zone circuit or to the panel's Aux Tamper terminals

Multiple contacts on one zone

Wire in series just like PIRs. The 4k7 fits at every contact, the 2k2 only at the last:

Zone A → Contact 1 [4k7] → Contact 2 [4k7] → Contact 3 [4k7 + 2k2] → Zone B

7. Wiring the External Bell Box (Texecom Odyssey)

The Odyssey series is the standard Texecom external sounder. It has a standalone battery, strobe, and tamper — all wired separately.

Terminal layout (Odyssey X)

Wiring the Odyssey to a Premier Elite panel

Panel                           Odyssey
+12V AUX ─── Red ──────────── A (+12V)
0V       ─── Black ─────────── D (0V)
BELL- out ─── Yellow ─────────── B (BELL)
STROBE out ─── Orange ─────────── S (STRB)
TAMP input ─── Green ──────────── C (TAMP)

How the bell box tamper works

The Odyssey has a lid tamper switch and a wall tamper (anti-removal). Terminal C is wired to the tamper terminal on the panel. The bell box monitors for the tamper circuit going open — this triggers a tamper alarm at the panel.

Important — hold-off mode: When the bell box first powers up, it enters a hold-off mode and will not sound until the tamper circuit is secured (lid on, wall tamper engaged). This prevents the sounder from sounding during installation. The strobe is also disabled until tamper is secure.

Bell box battery

The Odyssey has an internal rechargeable battery. This charges from the permanent +12V supply. It does not require any additional wiring — it is self-contained. Do not leave the box powered for long periods without the battery connected; charge the battery before commissioning.

8. Wiring the Internal Sounder

The internal sounder (siren inside the building) connects directly to the Premier Elite panel's bell output. Texecom Premier series panels have a dedicated internal sounder output.

Panel terminals

Or on some panels: BELL+ / BELL- for a standard siren output.

Speaker specification

• One 16Ω loudspeaker, OR
• Two 8Ω loudspeakers wired in parallel

Do not use a lower impedance speaker — it will draw excessive current and may damage the panel's amplifier output.

Placement

Mount the internal sounder in the loft, ceiling void, or a high position inside the property where it is audible throughout the building. It should not be easily accessible without tools. Wire back to the panel using 2-core cable.

9. Keypad Wiring (Network Bus)

Texecom Premier Elite keypads connect to the panel via a 4-wire data bus — not a zone loop. All keypads and expanders share the same bus.

Bus connections (same 4-core cable)

Daisy chain topology

Keypads can be wired in a daisy chain (series) or star topology. Daisy chain is the most common — each keypad has two cable entry points, and the bus passes through from one to the next:

Panel                Keypad 1              Keypad 2
Bus ──────────────── In │ Out ──────────── In │ Out ──── (termination resistor)

Termination resistor

Fit a 1kΩ resistor between the R and + terminals at the last device on the bus — the furthest keypad or expander. Do not fit it at any other point on the bus. Missing termination causes intermittent network errors, especially on longer cable runs.

Keypad addresses

If you have more than one keypad, each must be set to a different address. This is done via DIP switches or a jumper on the PCB — refer to the keypad installation sheet for the address map. Address 0 or 1 is usually the default and should be used for the first keypad.

Maximum cable length

Standard 7/0.2 alarm cable: up to approximately 100–200m total bus length depending on the number of devices. Use 0.5mm² cable on longer runs.

10. Wiring Zone Expanders (8XP / 8XE)

Zone expanders add extra zones to the panel. The 8XP is an external remote expander (adds 8 zones). The 8XE is an integrated expansion board that plugs directly into the panel chassis.

8XP — Remote Zone Expander

The 8XP connects to the same Network 1 bus as the keypads using 4-core cable:

Panel Bus ──────────────── 8XP (same T/R/+12V/0V connections as keypad)

Set the address on the 8XP using its DIP switches. Each expander must have a unique address. If two expanders share an address, both will malfunction.

Zones on the expander wire exactly the same as panel zones — EOL resistors, same 4k7 / 2k2 configuration, same rules.

8XE — Integrated Expansion

The 8XE plugs into the panel PCB expansion slot. No bus wiring needed — it is internally connected. It adds 8 zones (zones 9–16 on a 24-zone panel). Wire the zone terminals on the 8XE board exactly like panel zone terminals.

11. Tamper Circuits

Every device on the system must be tamper-protected under Grade 2. Tamper circuits are wired in two ways depending on the device.

Zone tamper (built into EOL wiring)

When using double pole EOL, tamper detection is integral to the zone circuit. If the detector lid is removed, the tamper switch opens the circuit entirely — the panel reads open circuit and reports a tamper fault on that specific zone. This is the preferred method as it identifies exactly which device was tampered.

Auxiliary tamper loop (series tamper on Aux Tamp terminals)

For devices that do not have zone-level tamper in the EOL loop (e.g. some door contacts without built-in tamper switches), tamper circuits can be daisy-chained in series and connected to the panel's AUX TAMP terminals:

Panel AUX TAMP+ → Device 1 tamper → Device 2 tamper → Device 3 tamper → Panel AUX TAMP-

All tamper switches in the series must be closed (device lids on) for the circuit to be complete. Any open tamper triggers a global tamper fault. The downside: the panel cannot tell you which device was tampered — only that the tamper loop has broken.

Panel lid tamper

The panel PCB has a built-in tamper switch that detects if the panel enclosure lid is removed. This is automatic — no additional wiring. The panel must be physically screwed to the wall using the correct mounting hole for the tamper switch to seat properly. Do not overtighten — this can damage the tamper spring.

12. Common Wiring Mistakes

13. First Fix Checklist

Before plastering or decorating:

• 6-core cable pulled to every detector position (PIRs, contacts, shock sensors)
• 6-core cable pulled to all keypad positions
• 6-core cable pulled to internal sounder position
• 6-core cable pulled to external bell box position
• 6-core cable pulled from panel to every zone expander position (if using 8XP)
• All cables labelled at both ends with device name/zone number
• Sufficient cable tail left at every position (minimum 500mm — enough to reach the device terminals with slack)
• Panel cable entry/boxing in position
• Cables routed clear of 230V mains wiring (minimum 50mm separation, or use screened cable if separation not achievable)

Related documents

• Getting Started — Security Alarms — system overview, terminology, Grade 2 explained
• Initial Setup Procedure — panel setup and zone programming after wiring
• Reset & Default — resetting panels and engineer codes