Peasy doesn’t register on infrared

Beneath their last position, a single torch in the lower parking lot threw random shadows across the front of the building. In the flickering light, something large was crouched before the grocery store. Its arms were unnaturally long and spread wide. The figure shifted and steel chimed and clanked.
Stealth pulled a small, squat monocular from her belt and held it to her eye. She cursed a moment later and slid it back into its pouch. “Too bright for the starlight scope,” she said, “and it does not register on infrared.”

Excerpt From Ex-Heroes, pg 306-307
Peter Clines
https://books.apple.com/us/book/ex-heroes/id585738407