There are two modules, a measuring-sender unit and a data-collecting-base-station unit. The receiver unit is pretty straightforward, a 315MHz RX unit mounted on a Arduino ¡s acting as a receiver and collects packets of data from the air.
Specifications
Bit Rate
4KB / S
Current
4mA
Frequency
315MHz
Length x Width x Height
Receiver - 30mm x 14mm x 7mm
Transmitter - 19mm x 19mm x 7mm
Operating Voltage
Receiver - 5V
Transmitter - 3.5V ~ 12V
Power
25mW
Transmission Distance
20-200 m (voltage is different, different results)
Tested Distance through wall - 10m