Feature: 1. Widely used in education experiments, electronic engineering design or testing, this is an alternative to resistance box, low cost alternative solution 2. Good quality FR4 copper material, with 7 jumper hat programmable resistors: 0 to 9,999,999 ohms, 0.1 ohm 3. Low power consumption, wide resistance range, can achieve 0 to 9,999,999 ohms 4. Good quality, durable, can be used for a long time, bring a lot of convenience 5. Small size, can be loaded into the bag, easy to carry, easy to take, easy to use Specification: Item Type: Programmable Resistor Board Material: FR4 Copper Resistance Tolerance: +/- 1% Rated Power: 1/2 Watt Maximum Operating Voltage: 200V Programmable Resistance: 0 to 9,999,999 Ohms, 1 Ohm Fixed Hole Center Distance: Approx. 87 x 33 mm / 3.4 x 1.3in Fixed Hole Diameter: Approx. 2 mm / 0.08in Sheet Thickness: Approx. 1.6 mm / 0.06in. Package List: 1 x Programmable Resistor Board Note: Please allow 0 to 2 cm error due to manual measurement. Thanks for your understanding.