RF Module (Rx/Tx) 433MHz

RF Module (Rx/Tx) 433MHz

• Modulation: ASK
• Input Voltage: 5 V
• RX Operating Voltage: 5V
• Frequency Range: 433.92MHz
• Input Voltage: 3-12V
• RX Typical Sensitivity :105 Dbm
• RX Supply Current: 3.5 mA
• RX IF Frequency: 1MHz
• TX Supply Voltage: 3V ~ 6V
• TX Out Put Power: 4 ~ 12 Dbm

A 433MHz or 315MHz RF (Radio Frequency) module is a low-cost wireless communication solution commonly used for short-range data transmission in remote controls, home automation, and IoT projects. These modules typically consist of a transmitter (Tx) and a receiver (Rx) pair that communicate via Amplitude Shift Keying (ASK) modulation.

Key Features:

• Frequency: 433MHz (common) or 315MHz (mainly in the US)
• Range: Typically 50–100m (open space), affected by obstacles and interference
• Modulation: ASK (Amplitude Shift Keying)
• Voltage: Usually 3V–12V (5V common)
• Data Rate: Low (~1–10 kbps)
• No Encryption: Data is sent in plaintext (not secure)

Pin Configuration (Typical RF Module):

Transmitter (Tx) Module:

Receiver (Rx) Module: