JOBSCOPE

DOMESTIC FIRE DETECTION

Coverage
Calculator

Configure mixed apartment types, choose the protection level and get an immediate equipment and cost estimate.

LIVE REQUIREMENTS

Configure the block.

Survey details

Level of cover
Alarm grade & interconnection
Permanent live supply available?
RCD / RCBO protection required?

BLOCK TOTAL

50 apartments · LD1 · Grade D1 hardwired

250alarms
Smoke alarms200block total
Heat alarms50block total
Relay bases501 per apartment
SmartLINKs2501 per alarm

Survey Notes

Apartment types

  • • 50 × 2-bed apartments · no cupboards over 1m²

Equipment required

  • • 200 × Ei3016 mains optical smoke
  • • 50 × Ei3014 mains heat alarm
  • • 50 × Ei128RBU relay base
  • • 250 × Ei3000MRF SmartLINK

Each apartment assumes one escape route, one kitchen and one living room. Grade D1 includes one relay base per apartment; hybrid and F1 wireless configurations do not. Add cupboards over 1m² for each LD1 apartment type.

ESTIMATED COST

Price the
system.

Indicative CEF online unit pricing, checked 4 September 2026. Material prices are shown excluding VAT.

View Aico at CEF
Ei3016 mains optical smoke£47.34 each ex VAT
£9,468.00
Ei3014 mains heat alarm£49.30 each ex VAT
£2,465.00
Ei128RBU relay base£46.65 each ex VAT
£2,332.50
Ei3000MRF SmartLINK£50.86 each ex VAT
£12,715.00
Installation labour£50.00 labour per SmartLINK
£12,500.00
Materials ex VAT
£26,980.50
Installation labour
£12,500.00
Subtotal ex VAT
£39,480.50
VAT at 20%
£7,896.10

TOTAL COST

including VAT

£47,376.60

Calculated as gross margin on the total cost excluding VAT.

Gross profit
£9,870.13
Sell price ex VAT
£49,350.63
VAT at 20%
£9,870.13

ESTIMATED SELL PRICE

including VAT · 20% margin

£59,220.75
Estimate only. CEF prices, availability and trade discounts can change. Labour is £50.00 per SmartLINK and £30.00 per wireless smoke or heat alarm. Where no permanent live supply is available, an additional £25.00 per smoke and heat detector is included. Selected RCD / RCBO protection adds £50.00 per apartment. Sell price uses the selected gross margin on total cost excluding VAT. A full system survey is required to confirm design, compatibility, cable routes, interfaces, access requirements and an accurate quotation.

BS 5839-6:2019+A1:2020

Understand the coverage.

The category describes where detection is provided. The grade describes the alarm system’s power arrangement.

01

LD1

High protection

Detection throughout all areas where a fire could start.

  • Escape route
  • Living room
  • Kitchen
  • Bedrooms
  • Airing & meter cupboards
02

LD2

Medium protection

Detection in escape routes and specified high-risk rooms.

  • Escape route
  • Living room
  • Kitchen
03

LD3

Minimum protection

Detection in circulation spaces forming the escape route.

  • Hallways
  • Landings
Alarm grades used in this calculator

Grade D1 hardwiredMains-powered detectors with sealed standby batteries and SmartLINK interconnection.

Grade D1/F1 hybridA mains Grade D1 hallway alarm links to Grade F1 RadioLINK+ alarms throughout the apartment.

Grade F1 wirelessBattery-powered RadioLINK+ detectors using tamper-proof primary batteries.

Engineer’s note

Do not install alarms within toilets, bathrooms or shower rooms. Test linked systems to verify that operation of one alarm causes all alarms to sound.

This calculator supports early-stage estimating; it does not replace a competent person’s design or risk assessment.

Read Aico’s standards guide

AI-PREPARED

Quotation summary.

Ready to copy into your records or open as a new email. Check the survey details before sending.

Send as email
Dear Customer, Further to my survey on 6 September 2026, the following equipment has been identified as required to satisfy the LD1 solution using the Grade D1 hardwired configuration. Apartment schedule: • 50 × 2-bed apartments · no cupboards over 1m² Equipment required: • 200 × Ei3016 mains optical smoke • 50 × Ei3014 mains heat alarm • 50 × Ei128RBU relay base • 250 × Ei3000MRF SmartLINK • Permanent live supply: available • RCD / RCBO protection: not included Estimated sell price ex VAT: £49,350.63 VAT at 20%: £9,870.13 Total including VAT: £59,220.75 BS 5839-6:2019+A1:2020: this estimate follows the selected LD1 coverage category and Grade D1 hardwired power arrangement. Final detector siting, system design and compliance must be confirmed by a competent person following a full survey. Should you wish to discuss the proposed system further, please get in touch.

This generated wording is a draft. Review the equipment, pricing and recipient details before issuing it to a customer.