NANSHI Smart Indoor Sound Light Alarm USB/Battery Powered Fire Alarm  (Wall Mounted)

1 Multiple Power Options: This indoor sound and light alarm can be powered by both USB and batteries, providing convenience and flexibility in usage. 2 Smart Technology: Utilizing the latest for ZigBee communication protocol, this alarm system ensures stable and reliable connectivity, enabling smart home integration. 3 Sound and Light Alarm: Equipped with high decibel sound and attention grabbing flashing lights, this alarm guarantees effective warning signals. 4 Adjustable Sensitivity: The sensitivity of the alarm can be adjusted according to different environmental needs, offering personalized alarm protection. 5 Full Coverage: Suitable for homes, offices, shops, and other indoor locations, this alarm system provides comprehensive protection for your property and ensures peace of mind.Item Type: Indoor Sound and Light Alarm Material: ABS fireproof material Battery Type: Lithium battery (Shipped without batteries ) Battery Model: CR123A Battery Quantity: 2 Trigger Alarm: To make sound and light; Remotely open and close via APP When the network or power failure is reconnected, the previous settings are automatically restored through the memory function Operating Temperature: 0 - 40 (32 F - 104 F) Working Humidity: 20% - 85% Wireless Frequency: 2.4GHz Network Range: Approx. 40 meters/131.23ft Wireless Protocol: For Zigbee 3.0 IEEE 802.15.4