Digital programmable variable resistor module. 

• Supply voltage: 3V-5V
• Chip: X9C103S
• PCB board size: 2.7 * 1.3CM
• 10K span potentiometer.
• Potentiometer center tap between 0-10k slide in total 100 (potentiometer wiper typical impedance 40 ohms)
• VL and VH digital potentiometer sliding rheostat port corresponding to the low-end and high-end, allowing the input voltage range -5V to + 5V.
• Non volatile settings memory