Abstract :
Monitoring and long distance control by using radio wave gives amenity to control and monitor a device that we control from a safety place. Monitoring and long distance control system needs communication transmission media such as radio wave. Data communication transmission by using radio wave needs to choose the accurate modulation technique. The right modulation technique will be very determined to the moderate of monitoring and long distance control design. This system used the Amplitude of Shift Keying (ASK) as modulation technique. Besides using to establish the status situation of water gate and the water height level, this system can control the opening of the water gate. The water gate status and the water height level will shown on PC monitor and the water gate controlled by PC.