DDSY169 type single-phase electronic pre-paid energy meter is  a new product developed by our company,which is based on excellent pre-paid special chip which has multiple function,such as eletrical energy calculation.load control and user’s information management.The product setting carge and adjusting load state in the electric netwok.
　　The product can be installed in he electric meter box,indoor or outdoor,the ambient temperature is-25℃~+60℃.The relative humidity is no more than 85%.
　　Each of performance norms of the product accords with IEC61036 static electric metre international standard and all technical requirments of J8/T8382-1996 prepaid electric meter standard.