DS2, TTLock BLE Wireless, 41x27mm, CR2032 Battery, Door Closed Auto-Lock Trigger, Low Profile
The S4A DS2 is a miniature wireless Bluetooth door sensor designed specifically for TTLock smart door locks and cylinders, detecting door open/closed status for instant auto-locking and tamper monitoring.
Product Overview
The S4A DS2 pairs directly via Bluetooth BLE to any compatible TTLock smart door lock or cylinder. Unlike timers that lock automatically after a fixed delay even if the door is still open, the DS2 detects the exact physical closure of the door, triggering the lock mortise bolt to extend the instant the door shuts.
Why Buy This Product
Smart Immediate Auto-Locking
Triggers the smart lock bolt to throw the instant the door closes, instead of guessing on a timer.
Protects Lock Deadbolts
Stops the motor from extending the bolt while the door is still open, preventing costly door jamb damage.
Perfect for Rentals & Airbnb
Guarantees that guests have securely shut the door behind them upon check-out.
Best for These Applications
TTLock Smart Locks & Cylinders
Designed exclusively to enhance TTLock handle locks, rim locks, and cylinder retrofits.
Commercial Office Doors
Ensures confidential conference rooms and executive offices re-lock instantly upon entry.
Key Advantages
- Direct Bluetooth Sync:Communicates directly with the lock without requiring Wi-Fi gateway or internet routing.
- Discreet Architectural Profile:Slim white casing blends seamlessly onto door frames without altering room aesthetics.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 0.03 |
| Shipping Weight | 0.05 |
| Sensor Category | door-window-sensor |
| Detection Technology | Magnetic Reed Switch |
| Magnetic Trigger Gap | 10 - 20 mm |
| Wireless Protocols | Bluetooth BLE 5.0 |
| App Compatibility | TTLock, TTHotel |
| Notification Methods | TTLock App Status, Lock Synchronization |
| Smart Linkage Automation | Yes |
| Power Supply Type | Battery Powered |
| Battery Type | 1x CR2032 Lithium Button Cell |
| Replaceable Battery | Yes |
| Battery Life | 12 - 18 Months |
| Low Battery Alert | Yes |
| Installation Method | 3M Double-Sided Adhesive Tape |
| Housing Material | Durable ABS Plastic |
| Operating Temp | -10°C to 50°C |
| Operating Humidity | 10% to 90% RH |
| Dimensions | 41 x 27 x 11.5 mm (Sensor), 41 x 10 x 11.5 mm (Magnet) |
| Stock | 9 |
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