This is the new complete Digital Wideband AFR Kit at a fantastic price. The Wideband AFR Gauge has both Peak and Warning features and the complete kit includes everything needed:
 
Wideband AFR Digital Gauge
LSU4.9 O2 Oxygen Sensor
9.8ft Sensor Wire
O2 Sensor Bung
Controller Box
Instructions
3.2ft Controller to Gauge Wire Harness
3ft Controller to power Supply Wire Harness

Please note:
*Due to extreme conditions & nature of usage wideband sensors excluded from any warranty.