Remote Switching System for home appliances In past days Infrared and cable Synchronizing were used instead of Bluetooth. The major drawbacks in these two are in infrared the TX and Rx have to be lined up with each other, Interference between devices is uncommon. The cable synchronizing is a little more troublesome than infrared. So to overcome these problems RF Wireless Transmitter & Receiver Modules were Used. Description of the Project: This project is used to automate the house and the same can be applied to an industry also. This project has a provision for Switching of house hold devices like Fan, Tube lights, Televisions etc through telephone from a remote handheld device from anywhere in the house. This is achieved with the use of an Embedded Microcontroller and a RF TX and RX Module. The handheld device has a keypad which is used to switch on or switch off a device.

1. Remote Switching System for home appliances
In past days Infrared and cable Synchronizing were used
instead of Bluetooth. The major drawbacks in these two are in infrared
the TX and Rx have to be lined up with each other, Interference
between devices is uncommon. The cable synchronizing is a little
more troublesome than infrared. So to overcome these problems RF
Wireless Transmitter & Receiver Modules were Used.
Description of the Project:
This project is used to automate the house and the same
can be applied to an industry also. This project has a provision
for Switching of house hold devices like Fan, Tube lights,
Televisions etc through telephone from a remote handheld
device from anywhere in the house. This is achieved with the
use of an Embedded Microcontroller and a RF TX and RX Module.
The handheld device has a keypad which is used to switch on or
switch off a device.

2. RF Transmitter
Microcontroller
PIC16F877
+5v Power Supply
Keypad

3. Microcontroller PIC16F877Microcontroller PIC16F877
Relay DriversRelay Drivers
RL1 RL2 RL3 RL4
Fan Light TV Radio
+5v Power Supply+5v Power Supply
RF Receiver

4. Applications:
• Automation in home/Industries
• Automatic switching applications
• Machinery Movement Control
• Automatic processing
Features:
• Advanced PIC Microcontroller based operation
• RF Communication with ON OFF Modulation
• No of Devices can be increased
• Short range wireless control of devices