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. We can manufacture different sizes and specifications of electronic ballasts according to customers' request.We also can provide OEM service