The MR24-60E is a 24 VAC, 60 VA transformer manufactured by NEC. The transformer is a two-wire, line voltage control transfrormer. It is UL listed, FCC Part 18 approved, and designed to meet the requirements of NEC Article 645-4. It is designed to provide a limited, 24 VAC Class 2 power to doorbells, intercoms, and other Class 2 circuits. The primary voltage rating is 120 VAC, and it has a secondary voltage rating of 24 VAC. It also has a secondary current rating of 2.5 amps. It is designed for use with other UL listed controls, such as an emergency stop switch, low voltage controls, and other related products.