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Product Name: FS100A 433MHz RF Transmitter & Receiver

The FS100A is a low-cost wireless RF module set operating at 433MHz, suitable for basic unidirectional wireless communication between two microcontrollers. It uses ASK (Amplitude Shift Keying) modulation and is ideal for hobbyists building remote controls, home automation, or wireless sensors. Despite its simplicity, the FS100A is capable of transmitting data up to 100 meters in open space when paired with a proper antenna.

Specifications:

Frequency	433.92 MHz
Modulation Type	ASK (Amplitude Shift Keying)
Transmission Range	Up to 100 meters (with antenna, line of sight)
Data Rate	Up to 10 kbps
Transmitter Voltage	3V to 12V DC
Receiver Voltage	5V DC
Transmitter Current	~10 mA (at 5V)
Receiver Current	~4 mA (idle)
Receiver Sensitivity	~ -105 dBm

Pinout Configuration:

Module	Pin	Function
Transmitter	VCC	Power Input (3–12V)
	DATA	Serial Data Input
	GND	Ground
	ANT	Optional antenna for longer range
Receiver	VCC	Power Input (5V)
	DATA	Serial Data Output
	GND	Ground
	ANT	Optional antenna for reception improvement

How to Use:
Connect the **Data pin** of the transmitter to your microcontroller's digital output and supply appropriate voltage (usually 5V). On the receiver side, connect the **Data pin** to your MCU’s digital input. Use libraries like **RadioHead** or **VirtualWire** in Arduino IDE to send and receive data. Antennas (17cm wire) are strongly recommended on both modules to achieve optimal range.

Using Purposes:

• Wireless control systems (garage doors, alarms, etc.)
• Simple one-way communication between MCUs
• Remote sensor data transmission
• DIY home automation switches
• Wireless signal triggering projects

Please Note: Product information has been collected from various sources across the web. While we have made every effort to ensure the accuracy of the information presented, slight variations may still occur. Kindly verify the specifications and compatibility before using this product.