The key contact, while unseen, is an important part of any organ. If one fails during a performance, the entire musical program can be compromised. Allen has introduced a maintenance-free system in which a sealed reed switch is engaged by magnet. Neither dust nor the environment will compromise your music program with an Allen Organ.
In addition, if you require velocity sensitive keyboards for MIDI voices, Allen's Optical Sensor Technology (OST™) is the perfect solution. With infrared technology, this contactless system self regulates itself each time the organ is turned on for dependable velocity sensitive control of MIDI voices.