315MHz STX882 Wireless Transmission Remote Control Module

315MHz STX882 Wireless Transmission Remote Control Module is a high-power, small-sized ASK (Amplitude Shift Keying) transmitter module that provides reliable wireless data communication for remote control applications. This module features high stability and strong anti-interference capabilities, making it an excellent choice for low-cost wireless data transmission systems. Furthermore, the STX882 achieves high launching power and low harmonic radiation by utilizing a specialized SAW (Surface Acoustic Wave) resonator. Consequently, you can easily integrate this transmitter into compact devices to achieve impressive transmission distances when paired with a matching receiver. Therefore, designers frequently select this module to replace standard RF transmitters in industrial and consumer electronics where signal strength and efficiency are paramount.

Key Features:

• High Power Output: This module delivers significant RF power, enabling longer transmission ranges compared to standard low-cost transmitter alternatives.
• Low Harmonic Radiation: The high-quality SAW resonator ensures minimal interference with other electronic components and adherence to wireless regulations.
• Wide Voltage Range: The circuit operates efficiently across a broad voltage spectrum, allowing for flexible power supply options.
• Small Form Factor: Its compact footprint permits easy integration into space-constrained remote control housings and wearable electronics.
• ASK Modulation: In addition, the ASK modulation scheme ensures compatibility with various 315MHz receivers and standard decoding libraries.

Technical Specifications:

• Working Frequency: 315 MHz
• Operating Voltage: 1.2 V to 3.6 V (DC)
• Output Power: ≥ 15 dBm (at 3.6 V)
• Working Current: ≈ 34 mA (Maximum)
• Sleep Current: ≤ 0.01 μA (Extremely low power for battery operation)
• Frequency Stability: ± 75 KHz
• Data Rate: ≤ 10 Kbps
• Operating Temperature: −20°C to +70°C

Mechanical Specifications:

• Material: High-frequency PCB material
• Modulation Method: ASK (Amplitude Shift Keying)
• Oscillator Type: SAW Resonator
• Mounting: 3-pin through-hole header (Solderable)

Dimensions:

• Board Length: ≈ 15.0 mm
• Board Width: ≈ 12.0 mm
• Board Thickness: ≈ 1.0 mm
• Pin Pitch: 2.54 mm (Standard)

Pinout and Wiring:

• ANT (Antenna): Connect a 22.6 cm copper wire (1/4 wave) to this pin to maximize the transmission range.
• DATA (Input): Connect this pin to the microcontroller’s digital output pin to send data signals.
• VCC (Power): Connect to a stable 1.2 V to 3.6 V power supply.
• GND (Ground): Connect to the common system ground (0 V).
• Wiring Note: However, ensure the power supply is clean and stable to prevent frequency drift during transmission.

Datasheet Reference:

• Download STX882 Wireless Transmitter Datasheet

Commonly Used in:

• Garage Door Openers: Providing the primary wireless link between the handheld remote and the controller.
• Home Automation: Controlling smart switches, curtains, and lighting systems wirelessly.
• Wireless Sensor Networks: Transmitting data from remote environmental sensors to a central hub.

Applications:

• Remote Keyless Entry: Implementing secure and reliable entry for vehicles or secure facilities.
• Wireless Alarm Systems: Serving as the communication bridge for security sensors and panic buttons.
• Remote Control Toys: Enabling low-latency control for RC cars and hobbyist projects.
• Industrial Paging: Sending simple command signals across warehouse floors.

Equivalent Models:

• FS1000A: A common alternative transmitter, though the STX882 typically offers superior power and stability.
• SYN115: An integrated circuit based transmitter that offers similar 315MHz ASK performance.
• MAX1472: A high-performance Crystal-Based ASK transmitter often used in high-end RF designs.

Package Includes:

• 1 x 315MHz STX882 Wireless Transmission Remote Control Module
• 1 x 315MHz Helical Antenna (Spring Antenna)