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Honeywell DT4M Room Thermostat Modulation Battery DT41MWT30

Honeywell

Honeywell DT4M Room Thermostat Modulation Battery DT41MWT30

Replacement battery for the Honeywell DT4M room thermostat with modulation, part number DT41MWT30.

At a glance

  • Also known as 4200672
Manufacturer part no.
DT41MWT30
Showing prices

£61.64

£51.37 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Honeywell DT41MWT30 is a battery for the Honeywell DT4M room thermostat with modulation. It is a consumable item that powers the thermostat.

Before you order

  • Confirm the thermostat on site is a Honeywell DT4M and that the existing battery is marked DT41MWT30.
  • Check the thermostat's installation instructions for the correct battery type and replacement procedure before fitting.
  • Treat this as a consumable item — it is not a serviceable component of the thermostat itself.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.