Basic Technical Mathematics

ZOSI C291 2.5K 4MP Wireless Battery Security Camera Outdoor, Solar Powered Pan/Tilt Camera, 360 View, PIR Human Detect, Auto Track, Color Night Vision, 2-Way Talk, Light Siren Alarm, 32GB Memory Card

ADKIDO PTZ Camera, 30X SDI Camera Support Optical Zoom Video and POE with Network IP Live Streaming, Simultaneous 3G-SDI and USB Video Output, for Conferences, Church, Teaching

Zmodo 1080p 3pack Mini WiFi Camera, Two-Way Audio, Video Baby Monitor, Black with White, 3 Count (Pack of 1) (ZM-SH75D001-WA-3)

ZOSI C296 8MP 4K PoE IP Pan/Tilt Add-on Security Camera, AI Human Face Vehicle Pet Detect, Starlight Color Night Vision, Siren Alarm, Auto Track, 2-Way Talk, SD Card Storage, Work with Our PoE NVR

ZOSI C296 4K 8MP Plug-in Wired WiFi PT Security Camera Outdoor, Pan/Tilt Camera with AI Person Vehicle Face Detect, Color Night Vision, 2-Way Talk, Siren Alert, Memory Card Storage

Video Calling Handheld Security Camera Indoor,Nanny Camera Baby Camera Pet Camera,2-Way Video Call 350°Pan Cameras for Home Security,Move Tracking,Alarm Push 1080P 2.8inch Screen,Night Vision

Demoyaya One Egg Frying Pan, Mini Induction Frying Eggs Pan, 4.7" Single Egg Durable Small Pan with Handle Heat Resistant Non Stick Pot, Portable Pan for Stove Gas Induction Hob

Hikvision/Uniview Compatible 4MP PoE IP Turret Dome Camera with Microphone/Audio, IP Security Camera Outdoor Rated, 98ft IR Night Vision, Waterproof IP66, 108° Wide Angle 2.8mm Lens