Innovate Motorsports 3793 DB BLUE Wideband Gauge Only 0-5 volt Input Linear (2 1/16 52mm)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>GAUGE ONLY - Accessory for LM-1， LC-1， LMA-3， or DL-32</li><li>Gauge itself is analog only- not serial Accepts a linear 0-5 volt signal Air/Fuel Ratio Range is 74 to 224</li><li>Blackout appearance when unpowered</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41AOELEbosL.jpg" noproxy>