NEO NAS-AB02WT WiFi USB Siren Alarm with Temperature & Humidity Sensor

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