Product Introduction
The N4 is a professional outdoor smart lock designed for both indoor and outdoor application. It is built with durable Aluminum Alloy and Alloy Steel, making it resistant to the harsh conditions of outdoor use. The lock features a compact body with the size of 168×60×33mm and is available in Black and Silver, fitting all types of 35-100mm doors and combining practical performance with a sleek appearance.
It provides four convenient unlock methods to meet the daily access needs of families and small commercial spaces, including fast fingerprint recognition with a large storage capacity, password input, IC card swiping and traditional mechanical key access. The lock supports abundant expandable smart functions and multi-language options, covering TUYA and TTLOCK systems in both Bluetooth and WIFI versions for global usability.
Powered by four AA batteries, the N4 is equipped with a USB emergency charging port to prevent troubles caused by low battery and ensure normal unlocking at all times. It comes with complete standard accessories including a lock cylinder and two IC cards, enabling quick and easy installation. The N4 delivers reliable smart security protection for all access scenarios of indoor and outdoor doors.
After-sales Service
The product comes with a 2-year product warranty , plus 10-year technical support.
Minimum Order Quantity
For standard products: MOQ is 50~80 units.
For OEM/ODM customized orders: MOQ shall be calculated separately.
Quality Control System (Smart Lock Version)
SQA
- Supplier factory audit
- Component quality verification (lock body, PCB, fingerprint sensor)
IQC
- Incoming material inspection
- Functional test for electronic modules
- RoHS & appearance check
PQC
- Semi-finished assembly inspection
- Motor drive & fingerprint recognition test
- Power-on test and video/facial module verification
FQC
- 48-hour aging and full-function testing
- Lock body endurance test, door thickness simulation test
Smart Lock – General Q&A
Ⅰ. Cooperation & Delivery：
Q1. Are you a factory or a trading company?
A: We are a direct manufacturer with complete production lines and an in-house R&D team, supporting OEM / ODM customization and bulk orders.
Q2. What is the delivery time?
A: Standard models take around 3-5 working days; customized models take about 15–40 days depending on functions and quantity.
Q3. What is the packaging and shipping method?
A: Standard orders use universal packaging boxes. For quantities over 2,000 units, custom color boxes are available. Products are shipped by express or sea freight depending on order size.
Ⅱ. Battery & Power：
Q1. How long does one set of batteries last?
A: Under normal use (5–10 openings per day), the batteries can last around 6–12 months.
Q2. What if the smart lock runs out of power?
A: You can use an emergency power supply, such as a power bank (Type-C or 9V battery), to temporarily power the lock and unlock it.
Q3. Does the smart lock support rechargeable batteries?
A: Yes, but we recommend using reliable branded batteries to avoid overcharging or deep discharge.
Ⅲ. Warranty & Support：
Q1. What is the warranty period for smart locks?
A: All models come with a one-year warranty.
Q2. How do you handle after-sales service for overseas customers?
A: For every 1,000 smart locks ordered, we include one set of key spare parts for replacement use.
Q3. Do you provide installation guidance?
A: Yes, we provide detailed installation videos and online technical support.
Ⅳ. Durability & Stability：
Q1. What is the lifespan of the fingerprint sensor?
A: The fingerprint sensor can handle more than 200,000 recognition cycles.
Q2. What is the lifespan of the motor and lock body?
A: The mechanical lock body can endure over 100,000 opening and closing cycles.
Q3. Are smart locks waterproof?
A: Outdoor models have an IP55 waterproof rating, capable of withstanding light rain.
Ⅴ. Features & Operation：
Q1. How many fingerprints can be stored?
A: Most models can store between 100–250 fingerprints.
Q2. Does it support temporary passwords?
A: Yes, most models support one-time passwords that can be set remotely through the APP or management platform.
Q3. Can the lock be controlled remotely?
A: Yes, remote unlocking via WiFi / APP / gateway is supported depending on the model.
Q4. What unlocking methods are available?
A: Fingerprint, password, IC card, mechanical key, APP, and temporary password.
Q5. Can the lock connect to smart home systems?
A: Yes, it supports integration with platforms such as Tuya, TTLock, and PLC systems.
Ⅵ. Customization & Design：
Q1. Can I customize my own logo?
A: Yes, logo customization is available with a minimum order quantity of 500 sets.
Q2. Can I customize the appearance or color?
A: Yes, both panel color, material, and packaging can be customized.
Q3. Do you support APP customization?
A: Yes, OEM APP and branded interface customization are available, based on company specifications.
Ⅶ. Quality & Warranty：
All products comply with the 7S Quality Management System and come with a one-year warranty and video installation guidance service.
All products comply with the 7S quality management system and come with a one-year warranty and installation support.
