DDA2 One-Grip Smart Lock with Dual Battery
CaremLock DDA2 is a semi-automatic one-grip smart lock with two sets of 4×AA batteries, dual-power management and anti-reverse charging. Aluminum alloy body in Matte Black with 7 access methods, optional remote control and Tuya modules.
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Product Overview
The DDA2 uses a dual-power design with two sets of 4×AA batteries and an anti-reverse-charging protection circuit, delivering extended battery life for high-traffic residential and hospitality applications. Built on the Tongxin solution with 7 access methods and an aluminum alloy body.
Advanced Smart Access Technology
Dual-Power Management
Two sets of 4×AA batteries with dual-power management and anti-reverse-charging protection for longer battery life.
Fingerprint Recognition
Semiconductor fingerprint sensor for fast and reliable daily access.
Password & Virtual Password
Numeric keypad with anti-peep virtual password to prevent shoulder surfing.
Mechanical Key & IC Card
Mechanical key and contactless IC card for family, staff and project-managed access.
Premium Aluminum Alloy Hardware
All-aluminum alloy body with semi-automatic one-grip lever handle, indoor anti-lock knob, Type-C emergency power port and dual 4×AA battery compartments designed for extended operation in residential and commercial projects.
Reliable Daily Security Configuration
9-language voice prompts, 3 admin / 297 regular user capacity, 7 unlocking methods and Tongxin solution for stable performance in residential, hospitality and project deployments.
Product Parameters
Parameter
Model
Product Type
System
Material
Color
Battery
Power System
Emergency Power
Languages
Administrators
Regular Users
Quiescent Current
Dynamic Current
Working Temperature
Unlocking Methods
Optional Modules
Specification
DDA2
One-Grip Smart Lock
Tongxin solution
Aluminum alloy
Matte Black
4 × AA dry batteries × 2 sets
Dual-power management; anti-reverse-charging design
Type-C interface
9 languages standard
3
297
≤45μA
≤150mA
-25°C to 70°C
Fingerprint / Password / IC Card / Wristband / Mechanical Key / Mini-Program Password / Virtual Password
Remote Control Module / Tuya Module (optional)
Multiple Unlocking Methods
Fingerprint
Fast semiconductor fingerprint recognition for daily access.
Password
Secure numeric password access for residents and staff.
IC Card
Convenient contactless IC card access for family, staff and project users.
Wristband
Wearable wristband option for active residents and access control projects.
Mechanical Key
Mechanical key for emergency backup and override.
Mini-Program Password
WeChat mini-program temporary password for visitors and short-term guests.
Smart Access & Optional Modules
Mini-Program Temporary Password
Generate time-limited temporary passwords remotely through the WeChat mini-program for visitors, service staff and short-term guests.
Virtual Password
Anti-peep virtual password allows extra digits before and after the real code, preventing observation-based theft.
Optional Remote Control Module
Add a wireless remote control module to enable remote door opening from a short distance for commercial and access-controlled applications.
Optional Tuya Module
Add the Tuya module for mobile remote unlocking and time-limited temporary passwords through the Tuya smart home ecosystem.
Applications
Residential Apartments
Extended battery life from dual-power design is well suited for high-traffic residential apartment buildings.
Serviced Apartments & Rentals
Mini-program temporary password and remote management features support serviced apartments and short-term rentals.
Hotels & Hospitality
Multi-user capacity and 7 access methods suitable for hotel guest rooms and hospitality projects.
Office & Studio Spaces
Reliable access control for offices, studios and other light commercial spaces.
OEM & ODM Smart Lock Solutions
CaremLock provides customized DDA2 smart lock solutions for global distributors, integrators and project partners. The DDA2 dual-power design is well suited for high-traffic project deployments and customization requests.
✅ Custom Design
Customized appearance, functions and product solutions to meet your brand requirements.
✅ Flexible Configuration
Multiple modules, materials and finishes available for different project needs.
✅ Reliable Manufacturing
Advanced production lines and strict quality control ensure stable supply.
✅ Global Support
Professional pre-sales and after-sales support for distributors and project clients.
Application Scenarios
Request DDA2 pricing or samples
Share your project requirements and our team will reply with configuration options.
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Contact CaremLock for DDA2 one-grip smart lock samples, OEM and ODM inquiries. Our team will provide a suitable configuration based on your project requirements.
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