NEO NAS-AB03WT WiFi USB Siren Alarm with Temperature & Humidity Sensor

1. Automatically restore the previous settings with memory function when network or power off reconnecting 2. Multiple Sound Selection 3. Power supply: Mini USB , 5V-1A 4. Backup power supply: CR123A x 2 (not included) 5. Sound intensity: 90 dB 6. Wireless type: 2.4GHz, 1T1R 7. Protocol:IEEE 802.11b/g/n 8. Wireless range: 45m 9. Operating temperature: 0 - 60 degrees Celsius 10. Free APP: Tuyasmart or Smart Life 11. Support systems: Android and iOS 12. Workes with Alexa Echo and google home 13. Product size(D*W*H): 68x68x30mm