Specification Brand : Generic BulletPoint : AC/DC Current Clamp CC-650 ItemName : AC/DC Current Clamp CC-650 ItemTypeKeyword : clamp-meters Manufacturer : Generic Material : zinc PartNumber : LCXn_WYHD_20853 ProductDescription : oscilloscope BNC connector , one kind is joint multimeter rubber head , please inform me when it took the choose and buy what kind of joint. Conventional characteristic measurable conductor size: the largest diameter of 30 mm Low power indicator: red led lights flashing Working temperature range: 0C to 50C, 70% R.H. Storage temperature range: - 20 C ~ + 70 C , 80% R.H. Weight: 290gm (typical) Size: 178 mm (H) x 70 mm (W) x 33 mm (D) Electrical characteristics (23 ± 5C , 70% R.H. maximum) precision: Dc current: 0 to 650A , +/- (3% reading + 2A ) Alternating current (50 hz to 400 hz) : 0 to 500A , +/-(3% reading + 2A ) 500A to 600A , +/- (6% reading + 2A ) 600A to 650A , +/-(8% reading + 2A ) Load impedance: 10 k Ω (typical value) Output scale: 0 to 650 mv (AC/DC) corresponding to 0 to 650A (1 mV / 1A file); 0 to 1.6 V (AC/DC) corresponding to 0 to 160 a (1 mV / 100 mA file); Battery life: a typical carbon zinc batteries for 100 hours.