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Example configurationIndustry

A call for backup from the patrol — with receipt confirmed in the guard’s hand

Three-key LX transmitters with receipt confirmation for the guards on patrol, an identification receiver with a signal unit in the guardhouse, and pagers that alert the others on site.

  • 20 haof plant grounds
  • 3guards on patrol
  • 4 kmLX range in open terrain
A call for backup from the patrol — with receipt confirmed in the guard’s hand
Illustrative image

01 / Investment context

What problem does this configuration solve?

The plant covers 20 hectares: halls, storage yards, a car park and the perimeter fence along which the patrol route runs. On each shift three security guards walk the site while one person stays in the guardhouse at the gate. On the far stretch of the route a guard is several hundred metres from the guardhouse, often behind a building.

When something happens on the patrol that one person should not handle alone — an open hall door, a stranger in the yard, an injury — the guard must call for backup with one movement and without talking. A two-way radio means speaking, and even then there is no certainty that anyone heard the call. The guard needs to know that the call got through, and the guardhouse needs to know who is calling and why.

The investor’s goal: A call for backup from anywhere on the site, confirmed in the guard’s hand, with the guardhouse told who is calling and with which key.

How does this configuration work?

Each guard on patrol carries a three-key LX transmitter (PUX-303) designed for security systems: key 1 is a call for backup, key 2 reports a fault or an incident, key 3 follows the site’s procedure. The link is two-way: once the guardhouse has received the call, the transmitter confirms it with an LED, a buzzer and vibration, so the guard does not have to look at the device.

In the guardhouse an LX identification receiver (IDX-1001U/E) shows which transmitter called and with which key — e.g. “Patrol 2 — backup” — and keeps the events in its buffer. Its output switches on a signal unit (SWR-108) fed from a buffered power supply, so the call can also be heard at the gate. The other guards on site receive the call on LX pagers (OBI-4LX) and can set off to help straight away.

On a site with many buildings a range test checks the coverage; if part of the route lies in a radio shadow, a range extender (RTX-100BP) covers it without changing the transmitters. If the plant wants an archive of calls on a computer, the receiver works with the Tablica Synoptyczna software (SPA-1000/PR).

02 / Operating principle

From signal to action.

A guard on patrol calls for backup with one key. The guardhouse sees who is calling, and the others get the call on their pagers.

  1. 01 / Signal source

    PUX-303 Transmitter of a guard on patrol

    Calls for backup or reports an incident with one key, without speaking.

  2. 02 / Reception

    IDX-1001U/E LX receiver in the guardhouse

    Shows “Patrol 2 — backup” and confirms receipt to the transmitter.

  3. 03 / Notification

    Security Guardhouse and the others on patrol Signal unit Pagers

    The signal unit can be heard at the gate, and the others get the call on their pagers.

The guard feels in the hand that the call got through. The transmitter confirms receipt in the guardhouse with an LED, a buzzer and vibration — no need to look at the device or repeat the call.

A simplified functional diagram.

03 / Installation components

Devices in this configuration

An example selection — the number of devices depends on the site.

PUX-303 — 3-button LX remote, 4 km

PUX-303

LX transmitter for a guard on patrol: 3 keys — backup, incident, site procedure. Confirms receipt with an LED, a buzzer and vibration. Up to 4 km in open terrain.

Quantity: 3

SWR-108 — Signal unit with volume control

SWR-108

Light-and-sound signal unit in the guardhouse with volume control — the call can also be heard at the gate. 12 V DC supply.

Quantity: 1

OBI-4LX

OBI-4LX

LX pager for each guard on patrol: a colleague’s call for backup reaches the others wherever they are on the site.

Quantity: 3

Installation component

Buffered 12 V DC power supply with battery

Powers the signal unit in the guardhouse; the battery keeps it running during a mains failure.

Quantity: 1

RTX-100BP — LX range extender, 600 transmitters

RTX-100BP

LX range extender at the spot chosen by the range test, if part of the route lies in a radio shadow behind buildings; handles up to 600 transmitters.

Quantity: per range test

SPA-1000/PR — Tablica Synoptyczna software

SPA-1000/PR

Tablica Synoptyczna software on the guardhouse computer: an archive of calls with the time, transmitter name and type of report.

Quantity: optional

Catalogue figures describe a device under stated conditions, usually in open terrain, and are not a guaranteed range in every installation. Device quantities in the examples are indicative.

04 / Value for the investor

What does this solution give you?

Certainty the call got through

Vibration and a signal in the transmitter confirm receipt in the guardhouse, so the guard does not repeat the call or reach for a phone.

The whole site in range

The LX link has a range of several kilometres in open terrain, and an extender covers any radio shadow behind buildings that the range test reveals — with no cables across the site.

It is clear who is calling

The guardhouse sees the guard and the type of report, and the others on patrol get the call on their pagers and set off before anyone phones them.

05 / Before installation

What needs to be settled for a similar investment?

Before devices are chosen, what matters is the site’s conditions and how the system ties into the final installation.

Requirements to verify

  • A confirmation means the transmission was received in the guardhouse, not that anyone has responded — the response to each key is set by the site’s procedure.
  • This solution does not replace a certified hold-up alarm system where regulations or the insurer require one.
  • A range test along the whole patrol route — by the halls, in the storage yards and behind buildings; the range extender depends on its result.
  • What keys 2 and 3 mean, the transmitter names to be stored in the receiver, and who staffs the guardhouse on each shift.
  • Winter use: the transmitters work from −10°C, so in frost they are carried under the jacket rather than on an outer belt.

Example configuration — it needs a technical selection for your site.

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