驗鈔機 [验钞机]

Jyutping jim6 caau1 gei1
Pinyin yàn chāo jī

Definitions (CC-CEDICT)
  1. a device used to check money and detect counterfeit bills
Definitions (Wiktionary)
  1. noun
    currency detector (used to check the authenticity of a given banknote)