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Battery-Free NFC Passive Smart Lock - High Reliability Access Control from China Suppliers and Factory
Product Overview
The 40NFC Passive Smart Padlock solves the pain points of traditional active smart locks (such as external power supply/battery dependency, complex maintenance, and poor anti-interference performance). It operates by harvesting energy from mobile phone NFC, achieving battery-free, maintenance-free, and high-reliability access control.
Product Models
| Model | Description |
|---|---|
| CRT-NSG200NFC | Plastic housing |
| CRT-NJG200NFC | Middle-frame metal housing |
| CRT-NSG200-J | Built-in mechanical lock cylinder |
Technical Specifications
| Parameter | Specification |
|---|---|
| Lock Beam Material | 304 Stainless Steel |
| Lock Body Material | ABS + PC |
| Working Voltage | 2.2V ~ 3.3V |
| Working Current | < 100mA |
| Operating Temp/Humidity | -40℃ ~ 80℃; 20% ~ 98% RH |
| Switching Cycles | ≥ 20,000 times |
| Power Supply | Mobile Phone NFC Energy Harvesting |
| Protection Level | IP65 |
| Unlocking Time | ≤ 2 seconds |
| Key Protection | National Cryptographic Standard 4 |
| Operating Distance | Tap Distance ≤ 1cm |
| Working Frequency | 13.56MHz |
| Core Features | Battery-free, Maintenance-free, High Reliability, Eco-friendly |
Precautions
- 1. Align the mobile phone’s NFC area with the padlock’s NFC zone (marked "This side outward" on the lock body).
- 2. The padlock harvests energy via NFC and receives the unlock command.
- 3. Hold the lock body and pull down the lock beam to unlock.
Frequently Asked Questions (FAQ)
How does the 40NFC padlock work without a battery?
The padlock utilizes passive NFC technology. It harvests operating energy directly from the mobile phone's NFC electromagnetic field when tapped, eliminating the need for internal batteries or external power cables.
What is the protection level and weather resistance of this lock?
It features an IP65 protection rating and is built to operate under extreme environmental conditions, withstanding temperatures from -40℃ to 80℃ and humidity levels between 20% and 98% RH.
What are the differences between the product models?
We offer three models: CRT-NSG200NFC has a plastic housing; CRT-NJG200NFC features a middle-frame metal housing for enhanced physical protection; and CRT-NSG200-J comes with a built-in mechanical lock cylinder for hybrid security.
How secure is the access control system?
The padlock integrates National Cryptographic Standard 4 for secure key protection, ensuring that authorization commands and communication between the phone and the lock are highly encrypted.
What is the maximum operating distance and speed for unlocking?
The mobile phone needs to be tapped within 1cm of the padlock's NFC zone. Once aligned, the padlock harvests energy and unlocks in 2 seconds or less.