KD-208A
With LCD display
Response time: 27±3PPM>120min
55±5PPM60-90min
110±10PPM10-40min
330±30PPM<3min
Concentration range displayed: 10-550PPM
Power source: DC3V, 2PCS AA batteries
Battery service life: 3 years
Static working current: <35uA
Alarm current: <70mA
Alarm sound: >85dB(3M distance)
Dimension: 120*74*31mm
Weight: 125g
EN50291-1: 2018
// Detailed //
Kingdun KD-208A Wireless Carbon Monoxide Alarm
Your Smart Home Guardian Against Silent Killers
| Feature | Description |
|---|---|
| Detection Technology | Electrochemical sensor with high accuracy (±10–15% depending on concentration) |
| Alarm Types | High-concentration alarm, low-concentration warning, fault alerts, battery low |
| Display | Digital LCD showing CO levels (10–550 PPM), battery status, and error codes |
| Power Source | 2x AA LR6 alkaline batteries (3-year lifespan) |
| Response Time | Meets EN 50291-1:2018 standards (e.g., 3 minutes at 330 PPM) |
| Audible Alarm | >85 dB at 3 meters |
| Dimensions | 120 × 74 × 31 mm / Weight: 125g |
Key Functions
High CO Alarm: Red light flashes 5 times with 5 beeps (3 cycles/10 seconds) when CO exceeds dangerous levels.
Low CO Warning: Slower 4-flash/4-beep pattern every 3–5 minutes for prolonged exposure to 30–40 PPM.
Fault/Battery Alerts: Yellow light with beeps for sensor issues, low voltage (<2.3V), or end-of-life (10 years).
Silent Mode: Temporarily mute the alarm (CO <200 PPM) while maintaining visual alerts.
Self-Test: Press the TEST button weekly to verify sensor, buzzer, and lights.
Auto Recovery: Stops alarming automatically when CO drops below 40 PPM.
Non-removable Sensor: Factory-calibrated to prevent unauthorized tampering.
Battery Pin Lock: Prevents installation without correctly inserted batteries.
Installation Guide
Ideal Locations: Bedrooms, living areas, and near fuel-burning appliances (keep 1.5m from corners/furniture).
Avoid: Kitchens, garages (near vehicle exhaust), vents, or damp/high-temperature zones.
Steps:
Secure the mounting plate (height >1.5m, 0.3m from ceiling).
Insert 2 AA batteries and test functionality.
Slide the alarm onto the plate until it clicks.
Maintenance Tips
Monthly Cleaning: Use a vacuum or damp cloth; avoid chemicals.
Battery Replacement: Replace immediately when low battery warning activates (lasts 30 days post-warning).
Gas Sensitivity: Keep away from aerosols, alcohol, or solvents to prevent false alarms.
Emergency Protocol
Alarm Sounds:
Evacuate to fresh air, turn off fuel appliances, and call emergency services.
Do not re-enter until the alarm stops and CO levels are confirmed safe.
Low CO Warning:
Ventilate the area and reduce exposure, especially for children, pregnant individuals, or the elderly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Gas Detected | Carbon monoxide (CO) |
| Operating Range | -10°C to +45°C / 0–93% humidity |
| Accuracy | 30 PPM ±10 PPM; 50 PPM ±10 PPM; 100–300 PPM ±15% |
| Alarm Silence Duration | Up to 10 minutes (CO <200 PPM) |
| Service Life | 10 years (end-of-life warning displays "End") |
Why Choose Kingdun KD-208A?
Certified Safety: Meets European EN 50291-1:2018 standards.
User-Friendly: Simple installation, intuitive LCD, and one-button testing.
Long-Term Reliability: 3-year battery life and 10-year sensor durability.
Product Specifications
| Parameter | Description |
|---|---|
| Gas Detected | Carbon monoxide |
| Dimension | 120 × 74 × 31 mm |
| Weight | 125 g |
| Power Source | Two AA LR6 1.5V alkaline batteries (Pairdeer/Mustang brand) |
| Low Battery Warning | Activated at voltage < 2.3V; unit remains operational for 30 days post-warning |
| Battery Service Life | 3 years |
| Operating Temperature | -10°C to +45°C |
| Humidity Range | 0–93% relative humidity |
| Quiescent Current | <35 μA |
| Alarm Current | <70 mA |
| Audible Alarm Volume | >85 dB (measured 3 meters away) |
| Displayed Concentration Range | 10–550 PPM |
| Digital Display Accuracy | - A) 30 PPM ±10 PPM - B) 50 PPM ±10 PPM - C) 100 PPM ±15% - D) 300 PPM ±15% |
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