Now available from PMD Way is this versatile range of dual-rail voltage reference modules built around the popular TL431. Dual rail means that you can have both positive and negative reference voltage with respect to GND, for example for use with amplifiers - however you can also use the modules simply for voltage and GND. You can select your required reference voltage using the options menu. All boards measure 19 x 13 x 2.8mm, PCB pads have 0.1"/2.54mm pin spacing. Specifications for each module are as follows: ±2.5V Input voltage range: ±3.5~10.1V DC, output ±2.5V DC Input current: 2.5~16mA, output current: 0.6~14mA ±3.3V Input voltage range: ±4.3~10.9V DC, output ±3.3V DC Input current: 2.5~15mA, output current: 0.6~13mA ±5V Input voltage range: ±6~12.6V DC, output ±5V DC Input current: 2.1~16mA, output current: 0.1~13mA ±7.5V Input voltage range: ±8.5~15.1V DC, output ±7.5V DC Input current: 3~16mA, output current: 1~14mA ±10V Input voltage range: ±11~17.6V DC, output ±10V DC Input current: 3~15mA, output current: 1~13mA ±12V Input voltage range: ±13.5~19.6V DC, output ±12V DC Input current: 3~14mA, output current: 1~12mA More information: TL431 Datasheet (.pdf) Wiring guide: Don't forget to check out our full range of test equipment if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.