HopeRF RFM85W 433MHz RF transmitter

This transmitter has a transmission power up to 16dBm and is relatively compact.
In addition, the module is suitable for both 3.3V and 5V systems.

Specifications:  

• Voltage: 2.1 - 5.5V DC 
• Current (in use): 40mA (5V), 24mA (3.3V)
• Receiver Frequency: 433.92MHz
• Data rate: 300bps to 10Kbps
• Transmission power: 16dBm (5V), 12dBm (3.3V)

You have to attach the antenna yourself. Use a simple 17cm straight copper wire for this.
A ready-made antenna is also available. You can find it here: 433MHz Antenna.

Check the tab "Downloads" for more information and/or downloads.