Features: Ensure your family's safety with the Smokes Alarm, featuring reliable fire detection. This Smokes detector use advanced technology to quickly identify slow smoldering fires, offering superior sensitivity and a 85dB alarm to alert you. For homeowners, renters, and landlords seek dependable fire safety solution, this Smokes alarm is essential for anyone prioritizing home security. Perfect for installation in stairways, hallways, bedrooms, living room, and dining areas, ensuring comprehensive coverage throughout your home. With its fool proof modes and easy installation, this Smokes alarm simplifies setups while providing peace with weekly test reminders and low battery alerts. Specifications: Material: ABS Alarm Current: ＜40mA Sound: 85dB Low Voltages Warning: ＜2.2V±0.2V Working Temperature: -10 to 50℃ Temperature Alarm: 57+5℃ Battery: 1x9V Battery Requires(NOT Include) Wireless Frequency: 433MHz Size: About. 92x90x38mm/3.62x3.54x1.49in Package Includes: 1pc Smokes Detector note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.