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Kenji KJ-8501 Tracking Device Guide
The Kenji KJ-8501 is a high-performance GPS tracking terminal engineered for professional fleet management and advanced vehicle security. Operating on the specialized Kenji binary protocol (Port 5102), this device offers a robust bridge between mobile assets and monitoring platforms.
Designed for durability and precision, the KJ-8501 provides real-time location intelligence, ignition sensing, and remote fuel-cut capabilities. Whether you are managing a commercial transport fleet or securing a private vehicle, the KJ-8501 delivers low-latency data transmission and high-sensitivity GPS positioning to ensure your assets are never out of sight.
1. Device Overview & Protocol
The Kenji KJ-8501 utilizes a specialized binary protocol communicating over Port 5102. It is widely used in fleet management for its efficient data transmission.
2. Technical Wiring Pinout
Red Wire: Power Positive (12V/24V Battery +)
Black Wire: Power Negative (Battery – / Ground)
Orange/White Wire: ACC Ignition Sensing
Yellow Wire: Relay Control (Fuel/Power Cut-off)
Green Wire: SOS Button Input (Optional)
3. Relay Installation Diagram (Fuel Cut-off)
| Relay Pin | Connection Point |
|---|---|
| Pin 85 (Thin White) | Vehicle Battery Positive (+12V) |
| Pin 86 (Thin Yellow) | Device Yellow Control Wire |
| Pin 30 (Thick Green) | Fuel Pump Positive (Input Side) |
| Pin 87a (Thick Green) | Fuel Pump Positive (Load Side) |
4. Critical SMS Configuration Commands
Use the default password 123456 unless changed.
# Set APN (Server Gateway)
APN,123456,://operator.com#
# Set Server IP & Port (Kenji Port 5102)
SERVER,123456,0,123.123.123.123,5102,0#
# Set Upload Interval (ACC ON 10s, ACC OFF 300s)
TIMER,123456,,10,300#
# Remote Fuel Cut-off
RELAY,123456,1# (Cut-off) / RELAY,123456,0# (Restore)
5. Comparison: Kenji Protocol Devices
| Device Model | Port | Protocol Name | Specialty |
|---|---|---|---|
| Kenji KJ-8501 | 5102 | kenji | High-stability vehicle tracking |
| Kenji Industrial | 5102 | kenji | Heavy machinery & asset monitoring |
