IYILO NTC


Built-in NTC temperature protection at both plug and connector

What Is NTC Temperature Protection?

NTC (Negative Temperature Coefficient) sensors are highly sensitive components that detect changes in temperature in real time.
Think of NTC as a built-in thermostat for your EV charger.When temperatures rise, the system reacts immediately to protect your vehicle, your charger, and your home.

Why IYILO Uses Dual-Point NTC Monitoring

By monitoring both ends of the charging connection, IYILO reduces blind spots and responds before heat becomes a safety risk.
IYILO goes further.

Plug-in temp sensor

NEMA14-50

Detects overheating caused by wall outlet issues, aging wiring, or poor contact.

Charging Plug Temp Sensor

Connector-side

Monitors heat at the vehicle connection point, where resistance and wear can also generate excess temperature.

What Happens When Temperature Gets Too High?

No manual intervention required.
Just built-in protection working silently in the background.

How IYILO’s Smart Thermal Guard Stops Overheating & Prevents Fire Risks

NTC protection is not just a specification — it’s tested under real-world conditions.

How We Test NTC Protection

IYILO chargers undergo:
1. Simulated overheating tests
2. Controlled temperature increase scenarios
3. Automatic shutdown and recovery verification
4. These tests confirm that the system reacts reliably when heat rises and recovers safely once conditions normalize.

Other OEM VS IYILO Temp Sensor

Overheating may go unnoticed → Temperature monitored in real time
Risk increases over long sessions → Charging pauses automatically
User intervention required → Fully automatic protection

Frequently Asked Questions

Find answers to commonly asked questions about our products and services.

Rich text heading

Compatibility & Usage
Safety & Adapters
Installation & Configuration
Product Features & Specifications
Compatibility & Usage
Safety & Adapters
Installation & Configuration
Product Features & Specifications
How much electricity power can I get per hour?

The IYILO Level 2 EV Charger requires a 240V household power supply and can deliver between 6 to 48 amps of current. At 40A, it can provide approximately 35–45 miles of range per hour. At 48A, it can provide approximately 40–50 miles of range per hour.

Can I charge my car while offline?

By default, the IYILO EV Charger is set to Plug & Charge, allowing you to start charging immediately without using the app or Bluetooth pairing. The default current is 40A for the IYILO-RA40 and 48A for the IYILO-RA48. At the same time, when the charger is offline, you can still use Plug & Charge even without an internet connection.

Does it work with my vehicle?

Our J1772 Level 2 EV Charger is designed to be compatible with almost all electric vehicles (EVs) available in North America (Tesla need an adapter)

How can I determine if my car is compatible?

To ensure your electric vehicle is compatible with our EV Charger, a quick Google search or a check in your vehicle's manual should reveal whether your EV uses a J1772 or NACS connector. For Tesla owners, our J1772 EV Charger model can be used with a Tesla adapter

Can I lock the EV Charger to prevent unauthorized use if installed outdoors?

If you do not want your EV charger to be used outdoors by others, you can disable both the plug-and-charge and scheduled charging functions, and switch to manual mode for charging.

Can charging sessions be tracked for different users?

Yes. Each charging session is recorded under the account or RFID card that starts the charge.

Can multiple users access the same charger?

Yes. The main account can invite sub-accounts so multiple users can access and use the same charger.

Can Tesla adapters be used with the temperature protection system?

Yes. The temperature sensor in the connector still works when using a Tesla (NACS) adapter.

Does the charger require Wi-Fi to charge?

No. The charger can still charge normally without Wi-Fi.
Wi-Fi is only needed for app features and monitoring.No. The charger can still charge normally without Wi-Fi. Wi-Fi is only needed for app features and monitoring.

Can I use an adapter with the IYILO Level 2 EV charger?

We do not recommend doing so. There are many types of adapters on the market, and while some may appear to be NEMA 14-50R, their internal wiring may not be compatible with EV chargers, which can result in the charger not functioning properly. In addition, low-quality adapters with unreliable build quality may cause poor contact at the plug, leading to overheating and potentially causing the plug to burn or melt.

Can the IYILO plug-in version be converted to a hardwired installation?

Yes, both the IYILO 48A Plug-in version and the IYILO 40A Plug-in version can be converted to a hardwired installation. You simply need to remove the NEMA 14-50 input cable and connect the hardwire input according to NEC code or your local electrical code. Please consult a licensed electrician for proper installation.

Does the charger have temperature protection?

Yes. The connector includes a built-in temperature sensor that monitors heat and protects the charger.

Can the charger stop automatically when the vehicle is fully charged?

Yes. An auto-stop function can be enabled, allowing the charger to stop the session after the vehicle reaches full charge.

Can the charger prevent electrical overload?

Yes. Models with Dynamic Load Management can automatically reduce charging power when household electricity usage increases.

What is the maximum current and power that the charger can support in NEMA14-50 plug-in version?

In the NEMA 14-50 plug-in version, the IYILO charger supports a maximum current of 40A and a maximum power output of 9.6 kW.

What size circuit breaker should I install for the NEMA 14-50 Plug-in version?

For the NEMA 14-50 plug-in version, the maximum current (Dip switch setting) is preset to 40A at the factory. According to NEC (National Electrical Code) guidelines, the circuit breaker should be rated at 125% of the continuous load. Therefore, a 50A breaker should be used.

What is the factory preset current for the IYILO Level 2 charger?

The preset current for the 48A/40A Plug-in version is 40A, while the preset current for the 48A Hardwired version is 48A.

What size circuit breaker should I install for the 48A Hardwired version?

According to the NEC code, a 48A charger requires a 60A circuit breaker.

How can the current be adjusted?

The default current is 40A (RA40) and 48A (RA48). You can adjust the current in 1A increments via the IYILO App. If you want to switch between a 48A hardwired installation and a 40A plug-in setup, you can do so by adjusting the internal rotary switch, which allows you to toggle the maximum current.

Do I need to install a GFCI Breaker for my charger?

All versions of the IYILO EV Charger include a built-in GFCI Protection for personnel protection. According to NEC code, NEMA 14-50 outlets must have GFCI breaker. However, our charger performs a self-test that generates a small ground fault, which may cause external GFCI breakers to trip and interrupt charging. If local regulations require GFCI protection on the outlet, we recommend using a hardwired installation instead.

Do I need a qualified electrician to install my charger?

If you purchased the NEMA 14-50 plug-in version of the EV charger and already have a compatible outlet and circuit breaker installed, simply mount the charger on the wall and plug it into the outlet—no additional electrical work is needed.

If you are installing the hardwired version of the charger, we recommend hiring a certified electrician to complete the installation.

How can I convert the 48A plug-in charger to a hardwired version?

To upgrade the 48A plug-in charger to a hardwired version, you will need to replace the NEMA 14-50P input cable with a hardwired connection.You will need to prepare the following components yourself: L1, L2, and GND wiring (rated to support 48A current, we recommend using 6 AWG wires) and a 1″ liquid-tight conduit.For your convenience, we’ve included an AD34.5 conduit fitting inside the product package to assist you during the conversion process.

How can I adjust the current limit from 40A to 48A?

Please note: The 48A NEMA 14-50 plug version is factory preset to a 40A current limit.When converting it to the 48A hardwired version, please make sure to turn the rotary switch on the mainboard to any position between 3 and 9 to ensure the current limit is updated to 48A after the conversion.

Why can't I find the charger via Bluetooth?

Restart the charger to restore Bluetooth and try pairing again.
If it still doesn't appear, please contact support@IYILO.shop for a factory reset.

Why is my EV charger not charging?

If the charger was used offline (plug-and-charge) and stopped charging after some time, it may be due to memory limitations.
→ Please connect it to Wi-Fi and perform a firmware update.
If the charger is already online but not charging, please contact support@IYILO.shop for assistance.

How long are the input and output cables of the IYILO Level 2 EV Charger?

The input cable of the IYILO Level 2 EV Charger is 37 inches long, which is suitable for most installation scenarios. The output cable is a 25-foot premium-grade cable that can fulfill most charging needs in driveways and garages.

What is an NTC plug?

An NTC plug is equipped with a temperature sensor at the charger’s input plug to monitor its temperature. When the plug temperature exceeds the safe range, the system sends an alert through the app and automatically reduces the current. If the temperature reaches a dangerous level, the charger will automatically shut off the power, and charging will resume once the temperature returns to a normal level.

Can the IYILO Level 2 EV Charger be installed outdoors?

The IYILO EV charger has a NEMA Type 4 enclosure, which means it is dustproof, rainproof, and suitable for outdoor use. However, this device should not be installed in outdoor locations with high corrosion levels, such as coastal areas.

Why does my IYILO 48A Plug-in charger only show a maximum current of 40A?

The IYILO 48A Plug-in charger is factory preset for the NEMA 14-50 plug version. In compliance with NEC requirements, the maximum allowable current for the plug-in version is limited to 40A. If you wish to use the full 48A output, please switch to the hardwired version and use it with a 60A circuit breaker.