Activate your cell phone from a bump switch or from the ECU on your sip & puff chair, with this affordable adaptor built from Radio Shack parts. The 'Y' adaptor (#2740948), plugs into jack on cell phone. The corded type headset with microphone and speaker, plugs into that. Make adaptor cord using a 3/32"(2.5mm) stereo plug (tip and sleeve only) ( do not use ring ), connected to 1/8" mono inline jack,(3.5mm)( soldering required ). The 1/8" mono plug can then be wired to any special use, momentary switch, or to an ECU output on the sip and puff chair. With some practice, the voice command cell phone can place calls, answer calls, and end calls. ( cell phone call list is a help ). [MouseOnAStickInfo@gmail.com] [Test cell phone for compatability] [This unit has been tested on new model Samsung and Motorola phones] Please see other album ' QuadriplegicTechIdeas ' for more info, here on PhotoBucket.