The kit is consisted of transmitter and receiver, very popular for remote control.They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link.
Putting an antenna on either the RX or/and TX will further extend the range. The tiny copper wire (spiral) on the unit is an inductor, not an antenna.
Solder a wire of length about 17.3cm to both transmitter and receiver into the antenna hole. This wire is your antenna (check photo below).
Specification
- Frequency: 315 Mhz.
- Modulation: ASK
- Receiver data output: High - 1/2 Vcc, Low - 0.7v
- Transmiter input voltage: 3-12V (high voltage = more transmitting power)
- Transmitting range (work at 5V): 40m indoor, and 100m in open air
Pin Connection (Transmitter)
- Vcc: 3: 12 VDC
- GND: Ground
- ATDAT: Data (connect to arduino uart Tx)
Pin Connection (Receiver)
- Vcc: 3: 12 VDC
- GND: Ground
- DATA1: Data (connect to arduino uart Rx)
- DATA2: Data (connect to arduino uart Rx, use any of them)
Tutorial on how to use with Arduino
More tutorial on how to use with Arduino