Dongan Buck Boost Transformer Type LM, Encapsulated; Input Voltage: 240 x 480 VAC; Output Voltage: 24/48 VAC; Buck Voltage: 230 V, 240 V, 480 V Load Decrease Voltage; 253 V, 277 V, 264 V, 288 V, 504 V, 528 V Line Decrease Voltage; Boost Voltage: 240 V, 480 V Load Increase Voltage; 192 V, 200 V, 216 V, 218 V, 432 V, 437 V, 456 V, 457 V Line Increase Voltage; Frequency Rating: 50 Hz/60 Hz; Single Phase; Maximum Input Current: 1/0.52 AMP; Maximum Output Current: 10.4/5.2 AMP.