1、The voltage divider resistors are all 0.01% resistors to make sure temperature drift, and the output is buffered by an operational amplifier. 2、Factory calibration is calibrated by FLUKE8846A with a 6 1/2-digit digital multimeter, and the measured voltage is marked on the shielding case. 3、Product accuracy and small size, easy to carry and store, withgood practicality. 4、Product input voltage +15V, output voltage +10V/+7.5V/+5V/+5V, etc. 5、Using high-quality materials, strong and durable, has a long service life. 1 x Voltage Reference Module Item Type: Voltage Reference ModuleModel: AD584Input Voltage: +15VOutput Voltage: +10V/+ 7.5V/+5V/+ 2.5V, etc.Accuracy: Five and a half digits ( 0.0001)Temperature Drift: 15ppm/℃ (constant temperature)Size: Approx. 5 x 5cm / 2 x 2in (without protruding SMA)