https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-ash4/1002164_311342695677777_1162807247_n.jpg

http://www.bild-schall.com/product/quad-probability-module

• ? mA +15V
• ? mA -15V
• ? mA 5V

No info about availability.