| Home | Services | About Us | Tech | Contact |
Zeitronix Wideband 02 Sensors
ZT-2 Wideband Technical Specs

Zt-2 the most affordable Wideband Air/Fuel Ratio Meter and datalogging system.
Only $279 including the Wideband Oxygen Sensor!

AFR, Lambda, RPM, Vacuum & Boost with optional sensor, EGT with optional sensor, Throttle Position, 0-5V MAF Volts or other 0-5V source.
Very simple installation. Connect two wires to +12V and ground plus place the O2 sensor in the exhaust stream and you are ready to read AFR!  Finally you can tune for more power, closer to the edge, precisely monitoring Air/Fuel ratio Boost, EGT, RPM and throttle position datalogging up to 9 hours of data with a blazing rate of 74 samples per seconds per graph. The ZDL software can be utilized as a real time display when using a basic Zt-2 kit without the hardware display.

Fully digital, smallest wideband O2 controller and datalogging system in the world!

Zt-2 is about the size of 1" thick business card.
Extremely compact design for installation where space is a premium.

Zt-2 Specs

0.1 AFR accuracy; Operating voltage 10V to 18V; Switching power supply for oxygen sensor heater; Precise sensor temperature control; Reverse polarity protection; Integrated self-resetable fuse' Positive lock connectors; Protected inputs and outputs; Flexible Plug and Play Sensor Harness with a small, easy to route through the fire wall, connector; Wideband Oxygen Sensor included; Easy to install plug and play kit; Adjustable Narrowband Switching Point; Warning Alarms and Triggers

Inputs/Outputs: Bosch Wideband O2 sensor

Linear Wideband Output AFR=Vx2+9.6; Nonlinear Wideband Output; Serial data output to the Zeitronix Wideband LCD Display; Serial data output for real time datalogging (PC laptop required); RPM Input ( tachometer or primary side ignition coil input).
The RPM input  works in any car and any ignition system. No additional adapters needed!; Simulated Narrowband Output to feed a stock ECU; Throttle Position Input; Boost Sensor Input; EGT Probe Input; User Input; Warning Output

Input/Output range
1.43 to 0.64 Wideband
21.0 to 9.5 Wideband
25.5 inHg (650 mmHg)
50 PSI (3.5 Bar) MAP Sensor
Vacuum to 35.3 PSI (2.4 Bar) pressure
75 PSI (5 Bar) MAP Sensor
Vacuum to 60 PSI (4.1 Bar) pressure
150 PSI (10 Bar) Pressure Sensor
0 to150 PSI Gauge (0 to 10 Bar)
392 F - 2200 F or 200 C - 1200 C
Analog Wideband Output
0 - 5V
Throttle Position
0 -100 %
0 - 18,000
User Input
0 - 5V

ZDL Datalogging Software
The Zt-2 communicates with the PC Laptop via the serial port. The ZDL logging software records up to 9 hours of data per single file. Different screen options are available.  It has a black background for easy night tuning. The logging start, stop and pause accessible from keyboard shortcuts. Excel and text data export.

Win95/98/NT/2000/ME/XP/Vista compatible.
You do not need P4, P3 or even P2 laptop. We understand that you want to leave your new laptop at home and dedicate the old one to car tuning. We give you well optimized software. If your laptop is capable of running Win95 and up it is good enough for the Zeitronix logging software.

The digital gauge screen option could be used when purchasing the Zt-2 without the LCD display.

Zeitronix Wideband LCD Display

 The remote LCD display gives you a stealth look and important data in high contrast digital format. The aluminum enclosure dimensions are 4.7" x 2" x 0.9" , slightly larger than the LCD display itself. The LCD fonts are bright white on a black background. High contrast LCD digits are visible even in a direct sunlight.
A push of a button located on the right side of the LCD shows peak and hold maximum AFR, Lambda, EGT and Boost values. The LCD display communicates with the Zt-2 digitally through a serial interface. This allows for a clean display installation in the car, since all heavy wire connections are going to the Zt-2. The display serial cable is thin, black and easily blends with the dash.

We also offer new round gauges, AFR/Lambda ZR-1 and ZR-2 Multi Gauge.
Both gauges "read" the Zt-2 digital serial data stream. For super clean and easy installation, just like our LCD display, the gauges plug and power up directly into the Zt-2 data port. There are no extra wires for power connections!
 The EGT Sensor
Zt-2 reads the exhaust gas temperature through a  standard K thermocouple, the same as used by most aftermarket EGT gauges. You can retrofit your EGT probe with supplied Zt-2 style 2 pin connector or purchase a new probe from us. Moreover, we offer 8' chromel-alumel extension wire with the Zt-2 style connector in case you need to extend your EGT probe.

Boost MAP Sensor
3.5 Bar, 50 PSI, absolute pressure MAP sensor. This means vacuum and 35.3 PSI gauge at sea level. The Zt-2's high resolution boost input in conjunction with a Zeitronix Boost Sensor is more accurate than most boost gauges.
0.5V        0 PSI
4.5V        50 PSI linear
RED        +5V

Note that the LCD Display, the EGT and Boost sensors are optional and not needed to read the wideband air fuel ratio from the Zt-2.

Items included with each order:

  • Zt-2 Wideband Controller
  • Bosch 5 wire Wideband Oxygen Sensor
  • Oxygen Sensor Harness (10 feet length)
  • Signal Harness
  • Serial datalogging cable with RJ-12 to DB-9 converting plug
  • Datalogging software
  • Instructions
  • 2 pin connector for the EGT input

Optional items which turn the Zt-2 from Wideband Air/Fuel Ratio Meter into entire tuning solution

  • Wideband LCD or round displays
  • Boost Sensor
  • EGT Sensor
  • ZAVT-1, Zeitronix Audio-Visual Warning and Trigger Box