Split‑Spectrum smoke sensor 10 year electrochemical carbon monoxide sensor Temperature Humidity Occupancy (120° field of view up to 20 feet) Ambient light Accelerometer Microphone Battery model: Six long-life AA batteries (Energizer® Ultimate Lithium “L91”) Wireless 802.11b/g/n (2.4GHz) Wi-Fi 802.15.4 (2.4GHz) Bluetooth Low Energy The alarm should not be installed in locations where the normal ambient temperature is below 40ºF (4 ºC) or exceeds 100ºF (38 ºC). Humidity range: 20%RH to 80%RH (non condensing) Audio Speaker loudness: 80 dB @ 3 ft (1 m) @ 1kHz Horn 85 dB SPL @ 10 ft (3 m) Senzor Nest Protect Smart Smoke & CO Alarm (Alb) NEST [ continua sa citesti.. ]