A smart motion sensor is a device that detects movement using infrared (PIR), ultrasonic, or microwave technology and connects to a smart home system (like Alexa, Google Home, or Tuya) to trigger automated actions, such as turning on lights, sending alerts, or activating security cameras.

Most smart motion sensors use Passive Infrared (PIR) to detect body heat and movement. When motion is detected, the sensor sends a signal to a smart hub or directly to connected devices (like lights or alarms) via Wi-Fi

• Entryways (for security alerts)
• Hallways & Staircases (to trigger lights)
• Bathrooms/Closets (for hands-free lighting)
• Near Windows/Doors (for intruder detection)
• Avoid placing near heat sources or direct sunlight to prevent false triggers.

Yes! PIR-based sensors detect heat and movement, not light, so they work in complete darkness. Some models also include ambient light sensors to adjust smart lights based on room brightness.

Yes! Automating lights, HVAC, or plugs to turn off when no motion is detected can reduce energy waste.

A window sensor is a smart security device that detects when a window is opened or closed. It typically consists of two parts: a magnet (attached to the window) and a sensor (on the frame). When the window opens, the magnet separates from the sensor, triggering an alert.

Window sensors use a magnetic reed switch—when the window is closed, the magnet keeps the switch closed. When opened, the magnetic field breaks, triggering the sensor to send a signal to your smart home system for notifications or alarms.

• All ground-floor windows (common entry points for intruders)
• Basement windows (often overlooked)
• Children’s rooms (for safety alerts)
• Avoid placing sensors on metal frames, which can interfere with magnetism.

An IR (Infrared) remote control is a wireless device that sends commands to electronic appliances (like TVs, ACs, or sound systems) using infrared light signals. It requires a direct line of sight to the device’s IR receiver to work.

Yes! Universal remotes (like Logitech Harmony) can be programmed for multiple devices. Some smart remotes use IR learning to copy commands from original remotes.

IR signals travel in straight lines and cannot pass through walls or obstacles. The receiving device must "see" the remote’s IR emitter (usually at the front) to detect commands.

A smart garage door controller is a device that allows you to remotely open, close, and monitor your garage door using a smartphone app. It connects via Wi-Fi and can integrate with voice assistants (Alexa, Google Assistant, Siri).

Yes! Smart controllers don’t disable your existing remotes or wall buttons—they add remote access via your phone, automations, and alerts (e.g., "Garage left open for 30 minutes").

A smart curtain robot is a motorized device that automates opening and closing curtains or drapes. It attaches to existing curtain rods (no rewiring needed) and can be controlled via app, voice (Alexa/Google/Siri), schedules, or sensors (light/temperature).

• Battery-powered: Lasts 3–8 months
• USB/rechargeable: Some models use USB-C.

Yes! Example automations:

• "Open at sunrise, close at sunset" (via geofencing or light sensors).
• "Voice control via Alexa/Google" ("Hey Google, close the curtains").

A smart air quality sensor tracks key pollutants and environmental factors, including:

• PM2.5/PM10 (dust, smoke, allergens)
• VOCs (chemicals from cleaning products, paints)
• CO2 (indoor ventilation levels)
• Temperature & Humidity
• Some models also detect formaldehyde, radon, or NO2.

• Mid-range models are ~80-90% accurate for general use.
• For professional precision, industrial sensors are better but costlier.

Yes! Many sync with:

• Apple HomeKit
• Google/Alexa
• IFTTT/SmartThings (to trigger air purifiers or HVAC systems).

Smart video doorbells connect to your Wi Fi and use a built-in camera, microphone, and speaker to let you see, hear, and speak to visitors via a smartphone app. Some models also offer cloud or local storage for recorded footage.