Specifications:

Input voltage: DC3V LR6-AA * 2
Quiescent Current: ≤55uA
Alarm Current: ≤160mA
Low power undervoltage: ≤2.4V
WiFi: 802.11 b/g/n
Detectable Gas: Carbon Monoxide (CO)
Alarm set value: 128ppm (± 50ppm)
Alarm Sound: ≥ 70dB/1M
Alarm Mode: Sound and flash Alarm
Installation Method: Wall Mounting
Working Temperature: -10℃to 55℃
Working Humidity: Up to 95% RH
Alarm mode: mobile phone app notification push(Smart Life/Tuya Smart)
Size: 90*90*33mm

Features: 

1. 【Wifi + bluetooth Dual Mode】Connect to the network faster. The connection network speed is 2 times faster than only Wifi. (bluetooth is only used for network signal connection, bluetooth cannot be used alone. WIFI+bluetooth is more stable).
2. 【Loud Alarm】When a dangerous level of carbon monoxide is detected, the red LED will flash and emit a loud alarm that can be heard even through walls, reminding you to make your defenseas soon as possible to avoid danger.
3. 【Remote monitoring】The Carbon Monoxided concentration displaying (PPM) ,can be observed in real time through the mobile APP. No matter how far away you are from home, you can make your home smarter.
4. 【Visible LED Display】3-digit display, when a carbon monoxide leak is detected, the current value will be displayed according to the concentration , an intuitive display for greater peace of mind.
5. 【Easy Installation】Powered by 2 AAA batteries (not included), slid to remove the back cover and replace the batteries. The back is equipped with wall mounting holes, can be fixed by the included screws, safe and fast.
6. 【Low Voltage Remind]]When the battery level is low, it will automatically remind you to change batteries, never worry about running out of battery.

Package include:
1x WiFi CO Sensor((Not include battery)
1x Sticker
1x User manual

① All indicator lights briefly turn on and then turn off when power on. The green indicator light flashes every second, the screen shows a 120-second countdown.the flashing stops after 120 secondsthen the screen shows "0 ppm." The green indicator light
flashes once every 40 seconds.
② When there is malfunction with CO sensor, the orange indicator light flashes twice every 40 seconds, the buzzer beeps twice, and the screen shows "ERR."
③ When press the test button the green and yellow lights keep turn on , the red light to blink, and the buzzer to sound a beep.
④ When the CO concentration in the environment exceeds the set value (128ppm), the red indicator light blinks, and a continuous beeping sound until the screen shows "0 ppm" then stop alarm ( APP receives alarm message if network connected success).
⑤ For user testing, you can lit acigarette and let smoke into the product. After a moment, the screen will show the CO concentration value. If it exceeds the set value, an alarm will sound, and the red indicator light will flash simultaneously.