Building a versatile water level alert system
Need to know when a liquid chamber is about to
Follow the instructions below to assemble a buzzer
warning system using a float switch, 9V battery clip, buzzer and a 9V
Alert system assembly steps
1. Our i-float float switches are delivered to you in
a "normally closed" state. For this application, we want the
switch to complete a circuit when the float rises, so we need the switch
to be "normally open." Simply remove the bottom clip from
underneath the float, remove the float, turn it upside down, replace the
float on the stem and re-attach the bottom clip. Now the float
switch will turn on the buzzer when water causes the float to rise.
2. Strip the ends from the float switch, buzzer and
battery clip wires. Twist connect one float switch wire to the
black lead from the battery snap and the other to the black lead from
the buzzer. Then twist connect the two remaining red wires, as
shown below. Use wire caps on all of the connections (only one
connection is shown capped below so that you can see the wire
3. Attach the battery and gently lift the float on
the float switch to test the system. The buzzer will sound. NEVER USE A
RECHARGEABLE BATTERY IN THIS OR ANY APPLICATION WHERE IT COULD GET WET.
RECHARGEABLE BATTERIES CAN EXPLODE IF SHORTED.
4. Use our Mold-a-Holder product to create a
mount for the float switch and a small platform to keep the buzzer and battery
away from what could be a wet surface. The photo below shows an
example. Mold-a-Holder is flexible and very easy to work with.
Mold-a-Holder instructions. Make a mount that is suitable
for your pan and situation. Just keep the battery up off the
A good alkaline battery will operate the buzzer for 3
to 8 hours. Replace your battery every 6-12 months or whenever
your alarm sounds for more than a few minutes.