This is FS1000A 433mHz Tx RF Radio Module. This RF module comprises an RF Transmitter and an RF Receiver. The transmitter/receiver (Tx/Rx) pair operates at a frequency of 433 MHz. An RF transmitter receives serial data and transmits it wirelessly through RF through its antenna connected at pin4.

The transmission occurs at the rate of 1Kbps – 10Kbps. The transmitted data is received by an RF receiver operating at the same frequency as that of the transmitter.

This low-cost RF transmitter can be used to transmit signals up to 100 meters (the antenna design, working environment, and supply voltage will seriously impact the effective distance). It’s good for a short distance, battery power device development. 433 MHz is the operating frequency for transmitter and receiver pair.

Features :

    Wide input supply (2.5 V to 12V)
    Easy to integrate (V+, GND, and Data)
    The device in deep sleep mode when Data pin is grounded
    Very small dimension.

Receiver Module specification

Operation voltage: DC5V
Static Current: 4MA
Receiver frequency: 433.92MHZ; 315 Mhz
Sensitivity：－105DB
Dimension：30*14*9mm
External Antenna：32CM signal wire，spiral

 
Transmitter Module Specification

Operating voltage: 3-12V
Operating frequency: 433.92MHz; 315Mhz
Standby current: 0mA
Operating current :20-28mA
Transmission distance:> 500m (open to receiving plate sensitivity at-103dBm distance of more than)
Output Power: 16dBm (40mW)
Transfer rate: <10Kbps
Modulation mode: OOK (Amplitude Modulation)
Operating Temperature: -10 ℃ ~ +70 ℃
Size: 19 × 19 × 8mm

Package Includes :

1 x FS1000A 433mHz Transmitter.

1 x FS1000A 433mHz Receiver.

How to interface with Arduino?

To interface the FS1000A (433 MHz RF Transmitter) and the XY-MK-5V (433 MHz RF Receiver) with an Arduino, you'll follow these steps:

1. Wiring the FS1000A Transmitter and XY-MK-5V Receiver

Transmitter (FS1000A) Wiring:

• VCC: Connect to the 5V pin on the Arduino.
• GND: Connect to the GND pin on the Arduino.
• DATA: Connect to a digital output pin on the Arduino (e.g., pin 12).

Receiver (XY-MK-5V) Wiring:

• VCC: Connect to the 5V pin on the Arduino.
• GND: Connect to the GND pin on the Arduino.
• DATA: Connect to a digital input pin on the Arduino (e.g., pin 11).

2. Transmitter Code

Here’s a simple code example to send data using the FS1000A:

#define TX_PIN 12  // Transmitter Data Pin

void setup() {
  pinMode(TX_PIN, OUTPUT);  // Set TX pin as an output
}

void loop() {
  // Send a high signal
  digitalWrite(TX_PIN, HIGH);
  delay(1000);  // Keep the signal high for 1 second

  // Send a low signal
  digitalWrite(TX_PIN, LOW);
  delay(1000);  // Keep the signal low for 1 second
}

3. Receiver Code

Here’s a simple code example to receive data using the XY-MK-5V:

#define RX_PIN 11  // Receiver Data Pin

void setup() {
  pinMode(RX_PIN, INPUT);  // Set RX pin as an input
  Serial.begin(9600);      // Start serial communication
}

void loop() {
  int receivedValue = digitalRead(RX_PIN);  // Read the value from RX pin

  if (receivedValue == HIGH) {
    Serial.println("Received HIGH signal");
  } else {
    Serial.println("Received LOW signal");
  }

  delay(100);  // Small delay for stability
}

4. Testing and Troubleshooting

1. Connect your Arduino with the transmitter code to one Arduino and the receiver code to another Arduino.
2. Upload the transmitter code to one Arduino and the receiver code to the other.
3. Power both Arduinos. You should see the receiver printing messages to the Serial Monitor indicating whether it’s receiving a HIGH or LOW signal.

Notes:

• Ensure the transmitter and receiver are within a reasonable range (typically up to 100 meters depending on environment and obstacles).
• Make sure the antenna is properly connected to maximize signal strength.
• You might need to implement a protocol for more complex communication to handle different data types and ensure data integrity.