433 MHzThese are pre-built 433MHz wireless transmitter / receiver modules. They feature ASK encoding, and perform very well. They are ideal for devices using short data bursts such as remote controls, trigger pulses etc.Specifications:Output power: 3dBm.Supply voltage: 3V.Supply current: 10mA max.Data rate: 300bps to 10kbps.Transmitter Module: ZW-3100Receiver Module: ZW-3102