PLEASE VERIFY YOUR PRODUCT IS COMPATIBLE WITH THIS SENSOR PRIOR TO ORDERING. Review images and model # lists below. This looks almost identical to another sensor we sell. Compare compatibility of both units. [Replacement Compatibility] Review the back of your sensor being replaced. It should read "MODEL NO.: 00592TX", "MODEL NO.: 00592TXR", "MODEL NO.: 06002M", "MODEL NO.: 06002RM", or ""MODEL NO.: 11126-592TXR" [Compatibility Note] Unsure of which replacement sensor your need? Reach out to consumer support for confirmation. Requires 2 AA alkaline or lithium batteries (not included)