3Packs LCD RoHs Poisoning Sensor Detector Home Alarm Washable Air Filter (White, One Size)
UNIQUE DESIGN: Product Dimensions: 4 X 4 X 1.5 Inch, Portable And Easy Installation. Precise Electro-optical Sensor, High Consistency And Stability, Move, Or In The Same Place For That. Loud Enough And Sounds Good.
AND VISIBLE: Our Family From CO, With 3 Digits LCD Displayer Is Optional, 'Err' Indicates The Unit Malfunctioning. 'Lb' Indicates It Low Battery & Need To Replace. '999' Indicates CO Level Over 999. ‘actual Concentration’ When Less Than 999, NOTE: LCD Not Lit When Less Than 30 .
ALARM WARNING: When A Dangerous Level Of Is Detected, The Red LED Will Flashes And A Loud Alarm Pattern Will Sound, Loud 85 Beep Warning Alarm With LED Flash While In The Alarm Mode For The Life-Saving
ENERGY-SAVING: Operated By 3 X 1.5V AA Batteries (not Included), The Alarm Sound Pattern Is 4 Beeps Every 5seconds For The First 4 Minutes. In 4 Minutes, It Will Change To 4 Beeps Ever Minute To The Battery
ALARM STANDARD: 50, Alert Within 60 To 90 Minutes; 100, Alert Within 10 To 40 Minutes; 300, Alert Within 3 Minutes

Maysly Security Camera Outdoor Wireless WiFi Cameras for Home Security 1080P with PTZ Night Vision Motion Detection 2 Way Audio Compatible with Alexa
✅【1080P HD & Need to be Plugged in】This outdoor security camera has 1080P high-definition display ,sharper and clearer image and video; With 355° horizontal and 110° vertical rotation ,completely cover 360° view, no blind zone to monitor your house security; It is NOT battery powered , need to be plugged in for power supply .
✅【Motion Detection & Night Vision】Our cameras for home security with smart motion detection, when movement or sound is detected, camera will send notification to your phone immediately.Built in IR-CUT filter switch night vision automatically, 65ft night vision distance, clearly monitor at night
✅【2 Way Audio & Remote Control】Built in microphone and speaker ,outdoor security camera supports you to hear and talk to your family or guests when you are out. Also ,you can remote control the camera with the YI IOT app in your phone , take a photo ,video , adjust the lens direction,motion detection sensitivity ,etc.
✅【How to Connect it to WiFi】Easy to set it up with 2.4G wifi ,NOT support 5G . Plug in the camera,wait a second, the camera starts turning around and you will hear double beeps. If no , reset it for a try . Tap the YI IOT app , add the camera , fill in the wifi account and password, face the QR code in your phone app to the camera ,wait for the connection. Also it has additional RJ-45 Ethernet Port to connect to the Internet.
✅【IP65 & 2 Way Storage】IP65 standard ,it works in extreme weather conditions , great choice for outdoor security monitoring. Our wifi camera supports 2 way storage , micro SD card (NOT included) or cloud service(need subscribe fee) . If you no need to save the video or play back , just watch the living stream video , set motion detection and receive notification , then you no need to use micro SD card or cloud service.

youyeetoo L1 4D 3D LiDAR Scanner, 360 Degree, 30 Meters Scanning Radius, ROS SLAM LIDAR Sensor, for AGV Robot Navigation and Obstacle Avoidance (L1PM (20M))
[3D position + 1D grayscale] L1RM 4D-LiDAR is a 4D lidar rangefinder module, which can be widely used in robots, smart cities, smart toys, logistics and other fields, supporting mapping, positioning, identification, avoidance Implementation of functions such as obstacle, environment scanning, and 3D reconstruction.
[Hight Performance] L1RM 4D lidar has built-in 3-axis acceleration and 3-axis gyroscope IMU modules, supporting a push frequency of 250Hz. The circumferential scanning frequency of L1 is 11Hz, the vertical scanning frequency is 180Hz, and the effective sampling frequency is 21600 points/ Second. L1 not only has excellent performance, but also has high reliability. It can also achieve stable ranging and high-precision mapping under the strong light of 100K lux outdoors.
[360°+90°] L1RM lidar sensor scanner has excellent ultra-wide-angle scanning capabilities. The field of view (FOV) extends to 360° horizontally and 90° vertically. It can realize three-dimensional space detection with a hemispherical field of view, and its application range can be expanded to More commercial scenarios.
[Whole House Dynamic Scanning] L1RM 4D 3D lidar scanner can quickly and accurately obtain the three-dimensional structural information of the whole house, which facilitates the positioning and autonomous navigation of mobile robots, and can help the robot expand richer functions such as whole-house cleaning and organization.
[Low Blind Zone] L1RM 4D lidar sensor has an ultra-low blind zone and a minimum detection distance of 0.05m, making it easy to achieve close range detection and recognition. It also supports non-repetitive static scanning. Through omnidirectional ultra-wide-angle non-repetitive scanning, high-precision point cloud data can be obtained to achieve image-level scanning effects.
[WIKI] http(s)://wiki.youy