Features • Cost-Effective Resistance Solution: This resistor board serves as an affordable alternative for precise resistance substitutions in various applications • Flexible Resistance Range: Adjust resistance values seamlessly from 1R to 9,999,999R, allowing for diverse experimental and design needs • High Precision Step Accuracy: With a step accuracy of 1R, this board is ideal for educational experiments and electronic engineering projects • Programmable Resistance Feature: Easily set resistance from 0 to 9,999,999 ohms, providing versatility for testing and circuit adjustments • Robust Voltage and Tolerance Specs: Operates at a maximum working voltage of DC200V with a resistance tolerance of ±1%, ensuring reliable performance in critical applications Features: 1、This is "resistance substitution box" good low？cost alternative solution. 2、Can flexible and quick setting resistance range from 1R to 9999999R. 3、Step accuracy 1R. for educational experiments, electronic engineering designs or test trimming are excellent applications. 4、Programmable Resistance: 0 to 9,999,999 ohm, 1 ohm per step. 5、Maximum working voltage DC200V, resistance tolerance: +/？1%. Specification: Condition: 100% Item Type: Resistor Board Material: Glass Fiber Size: Approx. 9 x 3.5 x 1cm / 3.5 x 1.4 x 0.4in Specification: 1/2 watt tolerance Programmable Resistance: 0 to 9999999 ohms, 1 ohm per step. Resistance Tolerance: +/-1% Rated Power: 1/2 watt. Maximum Working Voltage: DC200V Package List: 1 x Resistor Board Package List 1 x Resistor Board