Motorola MC4000 Quick Start Manual page 5

3 If you want to monitor for "flood", plug in the water-
sensing probe.
Plug the included water-sensing probe into the micro-USB
port on the MultiSensor as shown. You can put the probe
on the floor, or you can mount it on a wall or post if you
prefer.
The water sensing probe works when the metal probes
both make contact with water. When the water sensor is
on a floor, the metal probes should rest on the floor.
The flood cable length is 5 feet. If you need a longer cable,
you can plug the flood cable into a Micro-USB Extension
Cable, which has a micro-USB male connector on one end
and micro-USB female connector on the other end. These
are inexpensive, and various lengths are available online.
4