Battery-Free NFC Passive Smart Lock - High-Reliability Access Control from China Suppliers and Factory

The 40NFC Passive Smart Padlock is a revolutionary access control solution designed to eliminate the common issues found in traditional active smart locks, such as reliance on external power sources or batteries, complicated maintenance, and poor anti-interference capabilities. This innovative padlock harnesses energy directly from mobile phone NFC technology, ensuring a battery-free, maintenance-free, and highly reliable locking experience. Manufactured by leading China suppliers and produced in a state-of-the-art factory, the 40NFC Smart Padlock combines cutting-edge design with exceptional quality, making it the perfect choice for secure, efficient, and hassle-free access control systems

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.

Core Advantage: Battery-free, maintenance-free, and high-reliability access control powered entirely via mobile NFC energy harvesting.

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

Align the mobile phone’s NFC area with the padlock’s NFC zone (marked "This side outward" on the lock body).

The padlock harvests energy via NFC and receives the unlock command.

Hold the lock body and pull down the lock beam to unlock.

Frequently Asked Questions (FAQ)

Q: How does the padlock operate without a built-in battery?

A: The 40NFC padlock utilizes advanced NFC energy harvesting technology. It draws the necessary micro-power directly from the electromagnetic field generated by your mobile phone's NFC interface when tapped, eliminating the need for an internal battery or external power cables.

Q: What is the environmental protection level of this smart padlock?

A: The padlock is rated IP65. This ensures high resistance to dust ingress and low-pressure water jets, making it reliable for use in outdoor environments and varying weather conditions.

Q: How fast does the padlock unlock?

A: Once the mobile phone's NFC area is aligned with the padlock, the energy harvesting and command transmission processes are completed within 2 seconds.

Q: Can this padlock withstand extreme outdoor temperatures?

A: Yes, the padlock is engineered to operate reliably in harsh environments, with a working temperature range spanning from -40℃ to 80℃ and a humidity tolerance of 20% to 98% RH.

Q: What standard of security does the key protection system follow?

A: The padlock incorporates security protocols compliant with the National Cryptographic Standard 4, ensuring secure access control, command encryption, and prevention of unauthorized duplication.