Rain Alarm using NE555

Sunday, November 1st, 2009

This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator is used here which gives a tone of about 1kHz upon detecting water. The sensor when wetted by water completes the circuit and makes the 555 oscillate at about 1kHz. The sensor is also shown in the circuit [...]

8-Zone Water Sensor Alert Kit

Saturday, September 26th, 2009

Get advance notice of potentially hazardous water leaks in your home or office with a system that alerts you when water buildup is detected. The Waterbug 800 8-Zone Water Sensor Alert Kit can monitor up to eight supervised or 16 non-supervised zones; four supervised sensors are included, additional WaterBug Surface Sensors are available separately. The [...]

Water Sensor Alarm using LM380

Sunday, December 14th, 2008

This be Water Sensor Alarm Circuit for warn the water level , by when sensor point touch the water. The circuit have a voice loud warn hear immediately. By this circuit uses the integrated circuit LM380 , usual use be power amplifier IC the small-sized , seek buy easy , be usable not difficult. For [...]