This is the Seeedstudio 433MHz Low Cost Transmitter/Receiver Pair. The kit is consisted of transmitter and receiver, popularly used for remote control.
The popular link is like this: MCU -> Encoder -> Transmitter —— Receiver -> Decoder -> MCU.
The PT2272 (Encoder) and PT2262 (Decoder) are optional, their existence is to (1) avoid confusing when multiple RF links in range (2) isolate disturbance. You can integrate the encoding and decoding work to the MCUs on both sides.
Working voltage: 3V – 12V fo max. power use 12V
Working current: max Less than 40mA max , and min 9mA
Resonance mode: (SAW)
Modulation mode: ASK
Frequency error: +150kHz (max)
Velocity : less than 10Kbps
So this module will transmit up to 90m in open area .
Working voltage: 5.0VDC +0.5V
Working current:≤5.5mA max
Working method: OOK/ASK
Sensitivity: excel –100dBm (50Ω)
the use of an optional antenna will increase the effectiveness of your wireless communication. A simple wire will do the trick.