HiSmart is a DIY wireless home security system that anyone can quickly and easily install The free smart app HiSmart App allows you to monitor events at home in real time!
You can connect and control an unlimited number of accessories to the HiSmart system according to your needs: Smart Bulbs, Motion Sensors, Remote Controllers, Smoke Detectors, Door/Window Sensors etc It also works with Smart Cameras and Smart Plugs which allow users to watch live video or recorded files or turn ON/OFF the home appliances remotely When an unsafe event happens, like a break-in or pressing from panic button, the system will alert all emergency contacts with push notifications or SMS texts, while generating a 100db built-in siren to scare off any intruder

NOTE: this is not a standalone device, but requires being paired with HiSmart Main Hub
This wireless smoke sensor is an accessory working with the smart alarm system By using unique design and MCU to work with photo-electricity signal, it is dust-proof, pest-proof, anti-optical interference, etc This product responds well to the smoke of smoldering and burning With build-in photoelectric smoke sensor, it will trigger alarm when the smoke density reaches the alarm threshold

Technical specification:

Working Voltage: DC 9V
Battery: 9V (1x 6F22/ 6LR61 Battery)
Working Current: ≤50mA
Standby Current : ≤20μA
Alarm Sound: ≥85dB/30cm
Product Certification: BS EN 14604: 2005
Transmission Distance: without obstacle 200m
Transmission Frequency: 43392MHz
Working Temperature: -10°C~50°C
Humidity: <90%RH (non-condensing)
Weight: 987g (battery not included) 1345g (battery included)
Dimension: Φ107mm x Δ34mm

Warranty:

24 months