A "lazy" or slow sensor is diagnosed with the simple push of a button which
performs a response time test in a matter of seconds. Wiring can be checked out
by using the simulation functions and monitoring the engine response. Signal
output levels are displayed in real time on a fast response bargraph. Closed loop
performance can be monitored by the cross counts of the signal shown in a large
alphanumeric display.

Allows testing of the sensors on or off the vehicle.

Zirconium, Titanium 1 Volt, Titanium 5 Volt , and also the popular dual cell
wideband Oxygen sensors. Sensor can be heated or unheated (1, 2, 3 , 4 wires
or 5 for wideband).

• Easy and safe to use:Every function is activated by a single button, and the ST05 automatically detects and alerts the user of misconnections, overloads, etc.
• Test leads are made of high temperature silicon insulation and high copper stranding conductor for maximum durability and flexibility.
• For enhanced protection, the ST05 is equipped with a synthetic rubber holster, resistant to solvents, gasoline and other automotive chemicals.
• Internal electronics not only safeguard the ST05 against over voltages and currents, but also guard the sensors from being damaged in case of misconnections.
• Test leads are equipped with wire piercing alligator connectors.’
• Only needs a 9 Volt battery, that lasts 25 hours of use or more.
• Includes a complete and detailed user manual, which describes how to use the ST05, and also how to test Oxygen sensors and interpret the results.