Wide - Range Oxygen Sensor KGD - ZS - 321
Product Introduction
The KGD - ZS - 321 oxygen sensor is a five - wire planar wide - range oxygen sensor. There is no need for a regulating resistor on its connector. This type of sensor does not require a reference air sample. Instead, it uses the reference pump current as a fixed reference source to compare and calculate the oxygen content of the measured gas.

Product Features
Technical Parameters
| Item | Details |
| Heater Resistance | 9Ω ± 1.5Ω |
| Operating Voltage | 12V - 14V |
| Maximum Operating Current | 0.65A |
| Operating Temperature / Exhaust Gas Temperature | ≤930°C |
| Lambda Value Output by Oxygen Sensor at 450mV | 1.002 ± 0.004 |
| Light - off Time | ≤15s |