Covering Derry/Londonderry and nearby
Addresses anywhere in the BT47 and BT48 postcode districts can book sensor upgrades and replacement through us. The engineer who attends works under our management and travels to the site. There is no branch in Derry/Londonderry, so the price, the booking and the paperwork all come from one place.
Schools and colleges in and around Derry/Londonderry often want work done in the holidays, when entrances can be taken out of use without disrupting pupils. Planning ahead for half-term or summer dates makes it easier to find a slot that suits the timetable.
Nearby towns we also list for sensor upgrades and replacement (straight-line distance): Strabane (13.6 miles), Limavady (14.7 miles), Coleraine (27.1 miles), Omagh (27.5 miles).
What to think about for sensor upgrades and replacement in Derry/Londonderry
- Shopping parades and older shopfronts in Derry/Londonderry sometimes have low transoms or canopies that limit where a sensor can be mounted. The engineer checks height and angle first.
- Sensor changes on escape route doors must never stop the door opening when it needs to. The engineer checks the door's escape mode after any sensor work.
- Rain, snow and blowing leaves can trigger radar sensors over exposed doors. Some sensors filter weather better than others, which the engineer weighs up when choosing a replacement.
- Corridor doors that people walk past rather than through may work better on a touch-free switch than a motion sensor, cutting needless openings and heat loss.
- Shiny, wet or newly polished floors can confuse infrared safety sensors. Mention any recent floor changes at your building in Derry/Londonderry so the zones can be set for the new surface.
Sensor upgrades and replacement in Derry/Londonderry: guide prices
The visit price is agreed in writing before an engineer attends; parts and any further work are quoted before they are done. Guide price: typically £195 to £495 ex VAT.
| Item | Guide price | Notes |
|---|---|---|
| Add or replace a safety or activation sensor | £195 – £495 | per sensor fitted, ex VAT |
| Touch-free switch or push pad | £145 – £395 | per switch, ex VAT |
| Side-screen or light-curtain protection | from £295 | per door, ex VAT; on survey |
Sensor prices cover the part, fitting and set-up. If a sensor is fitted on a visit of its own, the visit charge (from £95 ex VAT) is added, and we confirm the total in writing before an engineer attends. Each sensor is set up for the door and tested before the engineer leaves.
Standards and rules in Northern Ireland
No law sets a fixed service interval. We recommend that a trained engineer checks the safety functions at least once a year, with service intervals set by the manufacturer’s instructions and how heavily the door is used, and that someone on site carries out simple regular checks and keeps a record.
Workplace law (the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993) expects powered doors to have suitable and effective features to stop them trapping anyone and, where needed for safety, to open by hand unless they open automatically if the power fails. Doors at work must also be kept in efficient working order under a suitable system of maintenance. How often a door is maintained should follow the manufacturer’s information and how heavily it is used.
How it works
- Report the fault or service. Let us know whether the door has failed, is behaving oddly or is simply due a service or safety inspection. A short video of the problem helps the engineer prepare for the visit.
- Agree the price first. Before anyone travels to Derry/Londonderry, the visit price is set out in writing. It is based on the door type, the work requested and the location, so you know the cost in advance.
- Diagnose, repair, test. On site, the engineer finds the cause and puts it right where the parts are to hand, or completes the planned service. Sensors, safety functions and emergency behaviour are checked before the door returns to use.
- Paperwork and next steps. A written record of the visit is left with you or sent afterwards. If parts must be ordered or more work is advisable, it is quoted separately and only goes ahead once you accept.
For doors that open for passers-by or close too soon in Derry/Londonderry, talk to us about new sensors and detection zones set for your entrance.
Sensor upgrades and replacement in Derry/Londonderry: questions
Will you record the sensor settings for our building in Derry/Londonderry?
Yes. The job report lists each sensor fitted, its position, the settings used and the test results. Keep it with your service records, as it helps future engineers and shows the door's safety set-up was checked after the work. The same details are useful if an insurer or inspector asks.
What price range should I expect for sensor upgrades and replacement in Derry/Londonderry?
Our guide is £195 to £495 excluding VAT (per sensor fitted), the same guide prices we use across the UK. We agree the visit price in writing before an engineer attends in Derry/Londonderry, and quote any parts or further work before doing them. The price guide lists typical repair and service costs.
Can a risk assessment in Derry/Londonderry tell us which sensors we need?
Yes. A safety inspection tests each hazard zone and records where sensor coverage is missing or poor. The report then lists the sensors or light curtains needed, and we can quote those items exactly as listed, or you can pass the report to another competent installer.
Will new sensors stop false openings at our entrance in Derry/Londonderry?
Usually. Modern sensors can ignore cross traffic and detect only people moving towards the door, and the zone can be narrowed. If the entrance faces a busy street or catches heavy weather, the engineer may suggest a sensor that filters those conditions better.
Which makes of automatic door can you work on in Derry/Londonderry?
Engineers working under our management work on most makes of automatic door, including sliding, swing, folding, telescopic and revolving types. Some older or obsolete operators have limited parts availability. If that applies, we explain the options, which may include a replacement drive unit on the existing frame, and quote them before anything is ordered.
What should I tell you when reporting a fault in Derry/Londonderry?
The address, the type of door, what it is doing or not doing, when the problem started and whether it is safe to use. A photo of the operator label showing the make, and a short video of the fault, help a great deal. With that, we can agree the visit price in writing and send an engineer with the right parts where possible.
Which marking should a new automatic door in Derry/Londonderry carry?
In Northern Ireland machinery carries the CE marking, with UKNI added where a UK body carried out the conformity assessment. The EU Machinery Regulation applies in Northern Ireland from 20 January 2027.