According to Jim: Season 4, Episode 12
4 - 12: The Nanny-Cam
Jim buys a nanny-cam to spy on the sitter he didn't want Cheryl to hire but learns something about Cheryl instead, prompting her to buy a camera of her own.
Jim buys a nanny-cam to spy on the sitter he didn't want Cheryl to hire but learns something about Cheryl instead, prompting her to buy a camera of her own.