Altronix TP1620 transformer provides 16.5VAC with a total of 1.2A output current.Input115VAC 50/60 Hz, 0.23A.Output16.5VAC/20VA (1.2A) output.TemperatureOperating: 0? C to 49? C (32? F to 120? F).Storage: - 20? C to 70? C ( - 4? F to 158? F).BTU/Hr. (approx.): 10 BTU/Hr.Relative Humidity 85% +/- 5%.System AC input VA requirement: 26.45VA.