This wireless RF kit includes a single-button handheld transmitter and a high-sensitivity super-regenerative receiver module. Designed for raw data transmission, this set allows a microcontroller to capture and decode unique digital signatures, making it a robust choice for simple remote triggers or secure entry systems.

Specifications

• Operating Frequency: 433.92 MHz
• Modulation Type: ASK / OOK (On-Off Keying)
• Transmission Range: 20m – 100m (Greatly depends on antenna and line-of-sight)
• Receiver Sensitivity: -105dBm
• Operating Temperature: -10°C to +70°C

RF Transmitter (Handheld Remote)

• Buttons: 1 Independent Channel
• Power Supply: 12V (uses 27A Alkaline Battery)<button></button>
• Encoding: Fixed Code (typically PT2262 or EV1527 compatible)
• Design: Compact keychain fob with a sliding cover to prevent accidental button presses.
• LED Indicator: Illuminates during transmission to confirm the battery is active and a signal is being sent.

RF Receiver Module (4-Pin Data)

• Voltage Supply (Vin): 5V DC (Stable 5V is critical for maximum range and sensitivity)
• Current Consumption: 4mA (Quiescent)
• Data Pins (D0, D1 (or D0)): These pins output the raw digital bitstream of the received signal. They are internally shorted on the PCB to provide identical data on both pins.
• Pinout: Vin, D0, D1 (or D0), GND
• Antenna Terminal: Small "ANT" solder pad located on the corner of the PCB.

Features

• Raw Data Output: Unlike relay-output modules, this receiver sends the raw square-wave bitstream directly to your microcontroller. This allows you to program specific actions based on the unique ID of the remote.
• Direct Microcontroller Interface: Fully compatible with 5V logic systems like Arduino Uno/Mega. If using with 3.3V systems (ESP32/Raspberry Pi), a simple voltage divider is recommended for the data line.
• Noise Filtering: The super-regenerative hardware circuit naturally filters low-frequency noise, though the data pins will show rapid "chatter" (random bits) when no transmitter is active as the receiver hunts for a signal.
• Scalable Security: Since the microcontroller handles the decoding, you can program it to recognize multiple different remotes or ignore unauthorized signals.

Usage Notes

• Antenna Requirement: You must solder a 17.3cm solid core wire to the ANT pad to achieve a functional range. Without this antenna, the range is typically restricted to less than 1 meter.
• Software Decoding: To read the button press, you must use an RF library (such as RC-Switch for Arduino). The library identifies the specific pulse-width timing of the "High" and "Low" signals amid the background noise.<button></button>
• Power Stability: Using a noisy power supply can significantly reduce the receiving range. Adding a 10uF capacitor across Vin and GND can help stabilize the module.