2nd Gen 4-in-1 Plug-in Smoke & Carbon Monoxide Detector with Battery Backup, Temp Humidity LCD Display

Keep your home and loved ones protected with this 4-in-1 Smoke and Carbon Monoxide Detector, designed to monitor multiple environmental risks in one compact device. Combining CO detection, smoke detection, temperature monitoring, and humidity tracking, it provides comprehensive indoor safety without the need for multiple devices.

The plug-in design allows for instant installation—simply connect it to a wall outlet and enjoy reliable protection within seconds. The high-definition color LCD display shows real-time CO levels, smoke status, temperature, and humidity, helping you stay informed about your home environment at a glance.

For uninterrupted safety, the detector includes a 1000mAh rechargeable backup battery, ensuring continuous operation even during power outages. When dangerous levels are detected, the system activates a powerful 85dB audible alarm and flashing visual alert, giving you and your family time to respond quickly.

Compact, reliable, and easy to use, this detector is ideal for homes, bedrooms, kitchens, apartments, RVs, dormitories, hotels, and rental properties, providing peace of mind wherever you stay.

• Complete 4-in-1 Safety Protection: Monitor carbon monoxide, smoke, temperature, and humidity simultaneously. One smart detector replaces multiple devices and provides complete indoor safety monitoring.
• Plug-and-Play Compact Design: No wiring or tools required. Simply plug the detector into any wall outlet for instant protection. Perfect for bedrooms, kitchens, RVs, apartments, dorms, and hotels.
• Rechargeable Backup Battery: Built-in 1000mAh rechargeable lithium battery keeps the detector working during power outages while saving money on frequent battery replacements.
• Dual Sound & Light Alarm System: Features a powerful 85dB alarm and flashing warning light with a 3-level danger alert system to notify you immediately when hazardous levels are detected.
• Color LCD Display with Adjustable Brightness: The high-definition color LCD screen clearly shows CO PPM, smoke status, temperature, and humidity. Adjustable brightness ensures comfortable viewing without disturbing sleep.
• Note: This product is non-intelligent and cannot be controlled by cell phone.

• Model: NA503E
• Carbon Monoxide: 0~999 ppm (±10%）
• CO Alarm Threshold: 49 ppm (Initial Default)
• Humidity: 0%~95% RH (±5%),non-condensing
• Smoke sensor: Photoelectric
• Input: 100-240V 50/60Hz
• Shell: Flame Retardant ABS Plastic
• Work Temp: -10°C~50°C/14°F~122°F
• Alarm: Yes Product
• Size:125.5x60.5x36.3mm(Excluding the plug)