VEI Systems Dual-Display Gauge: 320 deg-F Transmission Temperature and Wideband air-Fuel Ratio Display (Orange/Silver) NOTE: currently backordered. Please note significantly longer lead time. Measures transmission temperature from 90 to 320 deg-F with sensor included Works with most third-party wideband sensor/controllers with a linear 0-5V analog output. 2-1/16" (52mm) mounting size. Upper and lower user-settable temperature alarms (display flash).