Walnut Innovations 433Mhz RF Wireless Transmitter Receiver Module This is an ASK Hybrid transmitter+receiver module available at 433 & 315 Mhz. The transmitter Module employs a crystal-stabilized oscillator, ensuring accurate frequency control for best range performance. There is no requirement of external RF components except Antenna. RF Transmitter Features Output Power : 4~16dBm Circuit Shape: Saw RF Receiver Features Receiver Frequency: 433.92 Typical sensitivity: -105dBm Supply Current: 3.5mA IFrequency: 1MHz Operation voltage: 5 Volts ideal for remote control applications where longer range is required. The transmitter operates from a 3-12V supply, making it ideal for battery-powered applications.