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Example configurationRetail and services

A discreet call to the shift manager from the till of a filling station

Under-counter and foot buttons at two tills, a receiver showing the till number in the back office and a GSM transmitter that notifies the regional manager — also at night, when the cashier is alone at the station.

  • 2tills
  • 4call buttons
  • 2people notified by SMS
A discreet call to the shift manager from the till of a filling station
Illustrative image

01 / Investment context

What problem does this configuration solve?

The filling station has two tills in the sales area and a back office where the shift manager works during the day. At night the cashier is alone at the station, and the regional manager is off site.

When a conversation with a customer turns difficult — the customer is aggressive, drunk or refuses to pay — the cashier needs support but must not draw attention. Reaching for the phone or shouting for the manager can only make things worse. At night, with nobody in the back office, the signal has to leave the station.

The investor’s goal: A call the customer does not see should reach the shift manager in the back office by day, and always — at night too — go by SMS to people off site.

How does this configuration work?

Each till has a call button under the counter (PNP-202), and a foot button (SPR-PN1) sits on the floor by the cashier — for a situation where the hands must stay in view. The identification receiver in the back office (IDO-04/99) shows the transmitter’s number, that is, which till and which button the call came from.

The receiver’s relay switches on a signal unit with adjustable volume in the back office (SWR-108), set so that the manager hears it but customers in the sales area do not. The same relay, via a relay module (MPU-121) that galvanically separates the two circuits, feeds the input of a GSM transmitter in a housing with its own power supply (ATG-SG4set). The transmitter sends an SMS and rings (CLIP) the regional manager and a second person on the list.

The receiver, signal unit and relay module run on 12 V DC from a power supply (SPR-ZS1). An SMS goes out with every call: by day it adds to the signal in the back office, at night it is the only signal that leaves the station.

02 / Operating principle

From signal to action.

The cashier calls for support with an under-counter or foot button; the back office sees the till number, and an SMS leaves the station.

  1. 01 / Signal source

    Till Under-counter or foot button Under the counter Underfoot

    The cashier calls for support with a movement the customer cannot see.

  2. 02 / Reception

    IDO-04/99 Receiver in the back office

    Shows the till and button number, and its relay switches on the notification.

  3. 03 / Notification

    Support Shift and regional manager Back office Off site

    The signal unit sounds in the back office; the SMS and the CLIP call go to two people.

The customer does not see the cashier call for support. An SMS goes out with every call: by day it adds to the signal in the back office, at night it is the only signal that leaves the station.

A simplified functional diagram.

03 / Installation components

Devices in this configuration

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

PNP-202 — Under-counter panic button

PNP-202

Under-counter panic button

Button under the till counter: a call with a hand movement the customer cannot see. Battery-powered, with a housing tamper circuit.

Quantity: 2

SPR-PN1 — Foot button

SPR-PN1

Foot button

Foot button at the till: a call by foot when the cashier’s hands must stay in view. Powered by a 3.6 V lithium cell.

Quantity: 2

IDO-04/99 — Identification receiver, 99 transmitters

IDO-04/99

Identification receiver, 99 transmitters

Identification receiver in the back office: shows the number of the transmitter that called, and its relay switches on the signal unit and the GSM notification.

Quantity: 1

SWR-108 — Signal unit with volume control

SWR-108

Signal unit with volume control

Light-and-sound signal unit in the back office; the volume knob lets it be set so the manager hears it but customers do not.

Quantity: 1

MPU-121 — Relay module

MPU-121

Relay module

Relay module between the receiver’s output and the GSM transmitter’s input: galvanically separates the two circuits. Powered by 12 V DC.

Quantity: 1

SPR-ZS1 — System power supply

SPR-ZS1

System power supply

Mains power supply, 230 V AC, in the back office: powers the receiver, signal unit and relay module, which run on 12 V DC.

Quantity: 1

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?

The customer does not see the call

A button under the counter or under foot and a signal only in the back office — the cashier asks for support without escalating the conversation with the customer.

The signal leaves the station

At night, when the cashier is alone, the SMS and the CLIP call reach the regional manager and a second person on the list, so someone off site can respond.

It is clear which till

The number on the receiver points to the till and the button, so the shift manager goes straight to the right till.

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

  • This is a channel for calling support, not a certified hold-up alarm system: it replaces neither such a system nor a connection to a security company if the insurer or the station network requires them.
  • Mobile network coverage in the back office, at the GSM transmitter’s location — checked before installation.
  • The list of phone numbers and the SMS text — and whether the notification should go with every call or only on the night shift.
  • Operation during a power cut: a backup battery is not included in the GSM set and is chosen separately, as is backup power for the receiver.
  • The procedure after a call: what the shift manager does by day, and what the regional manager does at night on receiving the SMS.

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

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