Lone Worker Alarm System: WorkerSentry FAQs

Lone Worker Alarm System: WorkerSentry FAQs

Check out our Lone Worker Alarm System: WorkerSentry FAQs…

How does the lone worker transmitter operate?

The lone worker transmitter is a portable, battery-operated device that is designed to be carried by a member of staff, either in their pocket or clipped to their belt. At any point a worker needs to summon assistance, they simply press the red panic button on the front of the transmitter and a radio signal is transmitted.

The device also offers the ‘tilt switch’ function. Therefore, if the lone worker transmitter is tilted at over 60 degrees from standing, simulating someone being on the floor or unconscious, the transmitter will go into a 15-second countdown. If the member of staff does not stand up within this timeframe, a distress signal will also be transmitted. This function can be deactivated after 5 minutes by pressing the tilt override button at the top of the transmitter.

For more information about our Lone Worker Alarm solutions – click here.

How do you differentiate between which device has been activated?

Once the lone worker transmitter has been triggered, the radio transmission will be received by the central panel. The wall-mounted device features a number of indicators (1-8). Therefore, we can program each transmitter into a different channel, to identify which device has been triggered. So, upon receiving the alarm the corresponding indicator will illuminate and the panel will go into alarm.

What is the range of the lone worker alarm system?

Line of sight, the lone worker transmitter from the central receiver has a range of over a mile, without obstacles. Although, the thickness of the walls, the layout of buildings and metal all factor in. Therefore, we always offer a no-cost, no-obligation visit, to come to site and complete a full demonstration and a site survey to test the range of the system onsite to determine if we need to add any repeaters to extend the range of the coverage.

How large a site can the alarm system accommodate?

This is mainly subject to a range test, however, we can easily add in as many repeaters into the system as required to bounce the radio signals back from the required locations to the central receiver. Using repeaters, we have been able to cover, RAF bases, ports and quarries.

How long does it take to install the lone worker alarm solution?

The installation for the lone worker alarm systems is straight forward, as the system communicates via radio waves from battery operated transmitters. The receiver and repeaters both require a 240VAC supply – this could be a mains socket, but we recommend this be wired into an unswitched fused spur.

What are the ongoing costs once the WorkerSentry Man down alarm system has been purchased?

There are no additional costs once purchased as the WorkerSentry is ‘contract-free’ there are no costly on-going monthly or yearly fees. FYI a standard warranty is included.

However optional Enhanced Warranties (Bronze, Silver and Gold) are offered which do carry an additional charge and are renewable on a yearly basis.

Is a warranty included?

Yes, all MDH lone worker, panic alarms and deaf alarm products carry a standard one-year ‘return to base’ warranty. During this period, MDH will repair or replace any faulty unit.

This does not include repair of failures caused by misuse, neglect, accident, modification, operation outside the Specified Operating Environment, improper maintenance by the customer, failure caused by service of the unit by non-authorised personnel, or failure caused by a product, including supply products, for which MDH is not responsible.

We recognise that the equipment may be of critical importance, and whilst it will use its best endeavours to return the unit quickly, it cannot give any guarantee regarding timescale. We do however offer optional Enhanced Warranties which are an additional cost and renewed annually.

Does the MDH man down solution use GPS?

Our system does not offer GPS, it relies on designating transmitters to individual locations of the premises or individual members of staff. Therefore, when the panel goes into alarm, we can see which channel/transmitter has been activated.

Do I need an auto-dialler?

Depending on how you would like the alarm to be received, if you were looking to summon assistance externally or there isn’t anybody on-site to pick up the alarm, we can connect an auto-dialler into the central receiver. Once the alarm has been activated, this will trigger the dialler that will then ring out to a list of pre-programmed phone numbers, with a pre-recorded message requesting assistance.

We have two options for diallers that we can integrate into the system, analogue or GSM. If we can locate the dialler near an ordinary analogue phone line, this will then ring the landline number of the premises. However, if there is no analogue line we can access, we can use the GSM dialler that runs off a SIM card.

What is lone working?

Lone workers are those who work by themselves at any time without close or direct supervision, for example, someone working alone in a workshop, factory, petrol station, warehouse, kiosk, leisure centre or shop. Or people working on their own outside normal hours, for example, cleaners, security, stocktaking, maintenance or repair staff.

It may also include peripatetic employees working away from their fixed base or even people in isolated areas of sites or premises where other people are present elsewhere.

Employers responsibilities in the UK

In the UK employers have responsibilities for the health, safety and welfare at work of their employees and the health and safety of those affected by the work, e.g. visitors, such as contractors and self-employed people who employers may engage. These responsibilities cannot be transferred to people who work alone. It is the employer’s duty to assess risks to lone workers and take steps to avoid or control risk where necessary.

So that employees who are expected to work alone or away need to be assured of a safe working environment where their security and safety is a priority for the business. With MDH’s Lone Worker alarm services, it is easy to achieve this all-important peace of mind for your employees.

Employees responsibilities in the UK

In the UK employees have a responsibility to take reasonable care of themselves and to cooperate with their employer under health and safety legislation. This includes making full use of training and any other information, instructions, equipment and advice from their line managers regarding lone working.  Employees have responsibilities to take reasonable care of themselves and other people affected by their work and to co-operate with their employers in meeting their legal obligations.

What UK Worker Health and Safety legislation exists?

In the UK, employers have a legal Duty of Care to provide for the safety and security of their employees under the Health and Safety at Work Act 1974 and the Corporate Manslaughter and Corporate Homicide Act 2007.

For more information see The Health and Safety Executive (HSE) leaflet ‘Working Alone in Safety’ which is useful for anyone employing or engaging lone workers. It gives general guidance on working alone and offers advice on how to comply with duties towards lone workers under the Health and Safety at Work etc. Act 1974 (HSW Act) and the Management of Health and Safety at Work (MHSW) Regulations 1999.

Also, in the UK the Corporate Manslaughter Act mentioned above means that organisation can be prosecuted and face an unlimited fine for breaches of health and safety standards.

Where is MDH Wireless based?

MDH Wireless is based in Brackley in Northamptonshire and provides alarm solutions across England, Scotland and Wales. See more information about MDH Wireless and our history and expertise.

What happens when the SOS button is pressed?

Once the device has been activated, this will be received by the central panel. This will then indicate which transmitter has been trigged. Depending on how the customer would like the alarm to be received, this could be picked externally through an auto-dialler or remotely around the premises via a pager.


If you cannot find the question or answer you are looking for related to lone working systems or solutions (or man down equipment) please do contact our friendly, knowledgable team at MDH Wireless – we will be happy to help.