Product Review

2017-June-18 upgrade to Version 1.3
This is "resistance substitution box" good low-cost alternative solution, can flexible and quick setting resistance range from 1R to 9999999R, step accuracy 1R. for educational experiments, electronic engineering design or test trimming are excellent applications.

Features:
Design based on "resistors series" theorem.
1/4 watt tolerance +/-1% 1206 SMD resistors.
4mm banana sockets with plugs, easy to connect wires.
High quality FR4 glass fiber PCB.
With spare parts 20 pieces jumper caps.

Programmable Resistance: 0 to 9,999,999 ohm, 1 ohm per step.
Resistance Tolerance: +/-1%
Rated Power: 1/4 Watt.
Max. Working Voltage: 250V.
PCB Size: 89.6 x 64.2mm / 3.53" x 2.53"
Specification: http://www.audiowind.com/new-pdf/e-100c.pdf, No paper specifications, please download this document.