NON-SPRING RETURN, DIRECT COUPLED TYPE; 3.62 INCH WIDTH X 3.15 INCH DEPTH X 8.78 INCH HEIGHT SIZE; 24 VOLT MAX. AC VOLTAGE; 50/60 HERTZ FREQUENCY RATING; UL, CE, CSA APPROVAL; HVAC APPLICATION; 24 VOLT AC VOLTAGE RATING; NEMA 2 ENCLOSURE