Overview
Unobtrusive Size. Uncompromising Protection.
KEYPLUS Mini Photoelectric Smoke Alarm (TSS303A)
The KEYPLUS TSS303A is an ultra-compact mini photoelectric smoke detector engineered for reliable, decade-long fire safety. Powered by a sealed-in, non-replaceable 3V lithium battery that lasts over 10 years, it eliminates frequent battery changes and maintenance hassles. Fully conforming to European EN14604:2005/AC:2008 safety standards, it combines advanced automatic dust compensation with a new anti-false-alarm chamber design. Featuring an 85dB piercing acoustic siren at 3 meters, an 8-minute silence feature, and a 10-hour low-battery do-not-disturb mode, it provides discreet, unobtrusive protection for hotels, residential complexes, student housing, and commercial properties.
Pain Points & Challenge
Most Smoke Alarms Are Taken Down for the Wrong Reasons.
When fire alarms become annoying, properties become vulnerable:
- False Alarm Frustration: Dust build-up and optical chamber drift cause unexpected false alarms, leading tenants or staff to dismantle the unit.
- The Midnight Chirp: Low-battery warnings inevitably chime at 3 AM, creating service headaches and tenant complaints.
- Maintenance Overhead: Managing hundreds of rental units or student dorms with annual battery replacements drains time and budget.
Key Capabilities & Benefits
10-Year Sealed Power & Maintenance-Free Operation
- Feature: Integrated with a sealed, non-replaceable 3V industrial lithium battery providing over 10 years of operational lifetime.
- Advantage: Continuous, tamper-proof power from day one of activation through the entire statutory life of the detector without battery degradation.
- Benefit: Reduce property management overhead to near zero. No annual battery swaps, no risk of tenants stealing batteries for other gadgets, and guaranteed fire readiness around the clock.
Advanced Chamber Architecture & Automatic Dust Compensation
- Feature: Precision photoelectric chamber featuring automatic dust compensation and a new aerodynamic baffle layout.
- Advantage: Automatically adjusts its optical detection threshold as microscopic dust accumulates over time, preventing baseline drift and distinguishing true smoke from contaminants.
- Benefit: Say goodbye to nuisance false alarms. Keep emergency alert reliability high while avoiding unnecessary evacuations and costly false fire department call-outs.
Ultra-Compact Aesthetic with Smart Hush & Do-Not-Disturb Logic
- Feature: Measuring just Φ68 × 39 mm, certified to rigorous EN14604 standards, equipped with an 8-minute hush button and a 10-hour low-power non-disturb mode.
- Advantage: A clean, discreet design that blends invisibly into high-end architectural ceilings, combined with human-centric quiet periods for non-critical low-power signals.
- Benefit: Preserves architectural aesthetics in boutique hotels and residential spaces. If a low-battery signal occurs at night, the 10-hour delay prevents sleep disturbance until regular maintenance hours arrive.
Technical Specifications
| Model Number | TSS303A |
| Device Category | Smoke Sensor / Environment Sensor |
| Detection Principle | Optical Photoelectric Chamber |
| Power Source | Built-in non-replaceable DC 3V lithium battery |
| Product Lifespan | > 10 years |
| Standard Compliance | EN14604: 2005 / AC: 2008 |
| Alarm Output | Acoustic Siren ≥ 85 dB at 3 m + Flashing Red LED |
| Silence Function | Approx. 8 minutes hush duration |
| Do-Not-Disturb Mode | 10-hour low-battery notification delay |
| Self-Maintenance | Automatic dust compensation design |
| Dimensions | Φ68 × 39 mm |
| Operating Mode | Standalone acoustic / optical alarm |