Why Frequency Band Matters for Your Nammi
Nammi, a brand under the Dongfeng Motor Group, uses the 433MHz frequency band for its TPMS sensors. This is common among Asian and European automakers. The 315MHz band is primarily used in North American and Japanese vehicles. Using a 315MHz sensor on a Nammi will cause a complete communication failure with the vehicle’s receiver module.
The Nammi platform specifically requires 433MHz sensors like the BL-ST-063 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Aeolus, Eπ, Mhero, Nammi, Voyah | OE# E300019160, E300020260, H56A7920001AC. This sensor uses the Baolong Technology protocol, which is the OE supplier for many Dongfeng-group vehicles including Nammi.
Battery Life: What to Expect
The BL-ST-063 sensor uses a lithium manganese dioxide battery. Typical service life ranges from 5 to 7 years under normal driving conditions. Key factors that affect battery life:
- Daily mileage: Shorter trips mean fewer transmission cycles, extending battery life
- Temperature extremes: Very cold or hot climates can reduce battery capacity by 10–20%
- Vehicle inactivity: Parking for months drains the battery slower than daily driving
When the battery dies, the entire sensor must be replaced. There is no serviceable battery in modern TPMS sensors. Most Nammi owners see a low-battery warning on the dashboard around year 6.
IP Rating: Weather and Dust Protection
The BL-ST-063 carries an IP67 rating. This means:
| IP Rating Component | Meaning |
|---|---|
| IP6_ | Complete protection against dust ingress (dust-tight) |
| IP_7 | Protected against immersion in water up to 1 meter for 30 minutes |
This rating is critical for Nammi vehicles driven in rain, snow, or through puddles. The sensor’s valve stem and housing are sealed to prevent moisture from corroding the internal electronics. Cheaper aftermarket sensors often only have IP65 or IP66 ratings, which are not sufficient for submersion during car washes or flooded roads.
Protocol Compatibility: Pre-Programmed Advantage
The BH-Sens BL-ST-063 is pre-programmed to match Nammi’s OE protocol. This eliminates the need for a TPMS programming tool during installation. The sensor automatically wakes up when the vehicle starts moving and begins transmitting at the correct data rate and modulation scheme.
Compatibility details:
- Aeolus, Eπ, Mhero, Voyah: All share the same Baolong protocol as Nammi
- OE Equivalents: E300019160, E300020260, H56A7920001AC — these numbers cross-reference directly to Nammi and sibling brand parts
- Clamp-in design: The sensor screws onto the valve stem, making it a direct replacement for factory units
Installation Notes
When installing the BL-ST-063 on a Nammi:
- Verify the valve stem torque using a torque wrench (typically 4–6 Nm, check your manual)
- After installation, drive the vehicle for 5–10 minutes above 25 km/h to trigger sensor pairing
- No TPMS reset tool is needed — the sensor auto-learns to the receiver
Recommended Part
For Nammi owners needing a direct OE-fit replacement, the BL-ST-063 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Aeolus, Eπ, Mhero, Nammi, Voyah | OE# E300019160, E300020260, H56A7920001AC is the correct choice. It matches the 433MHz frequency, IP67 durability, and Baolong protocol that your vehicle expects.
FAQ
Can I use a 315MHz sensor on my Nammi?
No. Nammi’s TPMS receiver module only communicates on 433MHz. A 315MHz sensor will not transmit any data, and your dashboard will show a permanent “Tire Pressure System Fault” warning.
How do I know when my TPMS sensor battery is low?
Your Nammi will display a specific warning — typically a flashing TPMS light followed by a steady light, or a “Low Battery” message on the instrument cluster. You will not get a separate warning for each sensor; the system usually alerts you when any sensor’s voltage drops below threshold.
Is the BL-ST-063 sensor compatible with all Nammi model years?
Yes, as long as your Nammi uses a 433MHz TPMS system (all current Nammi models do). For pre-2020 models, double-check your VIN with the supplier to confirm protocol version, though Baolong has been the sole supplier for this brand since its launch.
Can I install this sensor myself without special tools?
Yes. The BL-ST-063 is clamp-in and pre-programmed, so you only need a tire mounting machine and a torque wrench. No TPMS programming tool is required. However, tire dismounting and balancing should be done by a professional if you lack experience.