Should timer design change by product?

I'm curious about how countdown timer design might impact conversion rates differently across various product categories. My e-commerce store sells diverse items from electronics to fashion, and I'm wondering if a one-size-fits-all timer approach is truly effective. Are there nuanced psychological triggers that might make a timer more compelling for high-ticket items versus impulse purchases? I want to understand if timer aesthetics, duration, and presentation should be strategically tailored to match specific product types and customer expectations.