Why these documents do not give a single answer
This is a disagreement between instructions, not a unit conversion or a choice of rounding. The product page starts at 3 lb; the manual starts at 2 lb. The manual’s Pro camera labels mean it cannot simply be excluded as an unrelated model document.
Selecting the lower limit would remove a safety condition without resolving the source conflict. Selecting the higher limit also does not establish a complete safety guarantee. The current conclusion is an unresolved minimum—not a newly chosen threshold.
Whisker · www.whisker.comWhisker Support · www.litter-robot.com
Get an operating instruction, not a household-capacity answer
Whisker lists the Pro for up to 5 cats. That answers a household-count question; it does not resolve whether a particular cat meets automatic-use conditions. This matters especially where pets in the same home differ in size.
When contacting support, name Litter-Robot 5 Pro, point out the product-page and shared-manual difference, and ask which manual revision and automatic-mode requirement apply to the unit. Do not add weight, alter detection or create a mode-switching workaround while the requirement is unresolved.
Whisker · www.whisker.comWhisker Support · www.litter-robot.com
FAQ
Litter-Robot 5 Pro frequently asked questions
Each answer stays within the facts and sources shown on this page.
01Can I simply choose the lower official weight threshold for my kitten?
No. Choosing one conflicting instruction yourself does not establish safe automatic use. The product page starts at 3 lb and the shared manual at 2 lb. Ask Whisker which instruction applies and do not bypass the sensing system.