Floor Water Sensor for Flood and Leak Detection (6 ft)

Level Sense LS2600 Surface Liquid Sensor connects to a control device accepting an analog or digital input.

• Size: L64*W15.6*H12.7mm
• Housing: ABS, white
• Working Voltage: 5Vdc-12Vdc
• Max. Voltage: 24Vdc
• Max. Working Current: 0.5C
• Temperature: 14°F +150°F / (-10? +65?)
• 6 Feet of Cable
• Red wire to Positive, white wire to Negative (ground)
• Perfect for Arduio, Rasberry Pi, and home electronics projects.

If you are using this in home electronics projects, please take note of the following:
 

• This device is not providing a “contact closure” it is providing a trickle current between the two contacts when water with some ionic content is present.
• The Leak sensor behaves as an open circuit when no water is present, and behaves as a (roughly) 1.4M? resistor when water is present. The resistance of it depends on your water and can vary.
• To confirm if the device is working, place the ohmmeter probes directly into water approximately 1.5” inches apart and take a reading. Then place the sensor in water and connect the ohmmeter to the red and white wires. The two readings should be similar.
• To get the best circuit design, put the sensor feet in water and measure the resistance with an ohmmeter. Use this resistance in your circuit design.
• In the unlikely event you have “non-conductive” water, it can be easily rectified by sprinkling some salt around the sensor location. The water will absorb the salt, the salt will ionize the water, and allow it to conduct.
• If you are using this sensor as an input to an Arduino or raspberry Pi, it is recommended to use either an Analog input, or a “PULL UP” input where the sensor is taking an input to ground.

Application                                                                    Red Wire Connection                                 White Wire Connection

Arduino / RP Analog Input                                           +5VDC                                                          Input, with suggested 5MO Pull Down Resistor


Arduino Discrete Input (pinmode=PULL UP)              Input                                                            Ground


Solid State Relay (with 3-32VDC Control Coil)            Coil -                                                           Ground
and 12-24VDC+ Power Source


Control a mechanical relay or contactor                      DC Source                                                 Transistor Base going into a “Darlington Pair”