Electronic transformer Main technical characteristics: Power line voltage: 220vac Power frequency: 50~60hz Rated voltage range: 170~250v Output voltage: 11.5v(30khz) Output power: 60w, 50w, 35w and 20w The electronic transformers for jh-l halogen lamp series developed and made by us feature largely in high efficiency & energy saving, small size, light weight, high reliability, etc, and are the ideal and hi-tech products in place of traditional electronic transformers. This product is especially applicable to places of high lighting conditions such as supermarkets, hotels, banks, etc.