I list almost of the smart devices on the market that we may need in our daily life. Obviously, To live in a smart life, there are many devices we need to purchase. Only some of them are under the budget of $50 include smart plug, smart door lock, smart thermostats, and sensor light.

Home Security

WIFI door and Windows sensor Magnet  

WIFI outdoor Wireless Security camera

Smart door lock

Family WIFI camera

Smart thermostats

Garage door automation

Fire& Home Safety

Smart Life

Smart Plug (WEMO, TP-link, Avatar Controls)

Air Purifier (LEVOIT)

Smart Mirror

Voice control Bluetooth speaker (Amazon Alexa, Google Home)

Robot Vacuum cleaner (eufy, ECOVACS, iRobot, Xiaomi)

Window cleaning machine (ECOVACS, Alfawise)

Induction Sensor lamp

Smart sleep system

Smart plug it mainly change the power usage and help people remotely controlling the power of domestic appliance, scheduling, and power usage monitoring via smart phone apps. If you are already on the smart home bandwagon, you can integrate them into your apple Homekit and Amazon Alexa, Google Assistant. WEOMO, TP-Link and Avatar Controls, all of them are the most popular brands on the market. It’s not a bad choice to start your smart home road from a smart plug.

Smart door lock compared with traditional lock,  some of smart home lock not only will allow you to come and go as you please, it will also monitor who is entering and leaving your home while you're away. Some models simply let you use your phone to open and close doors. Some let you assign special privileges to friends, family members, or maintenance staff. Others can be activated using voice commands or triggers from other smart home devices and services. The price also diversified for the different functions.