Transmitters for flood monitoring


The GC60F transmitter and flood detecting cable system is designed for users who wish to detect presence of flooding in sensitive areas. The system continuously monitors a dry or wet environment and data at the receiving device can be used to raise local or text message alarms. The GC60F flood sensing system can be used together with any other GenII transmitter to form a comprehensive environmental monitoring system.

The GenII flood sensing system consists of the battery powered GC60F transmitter to which one or two flood sensing cables can be connected.

Each flood sensing cable assembly consists of two sections: an inactive section and an active section (shown yellow / black).

The active section of the cable is a continuous 4 core twist, the yellow pair is simply a former to hold the black pair in place. The black pair wire is stainless steel with a special coating to permit flood detection. The yellow wires also serve to make the cable easily recognisable so that it is less likely to be confused with other alarm or wiring installations. Approx cable dia is 3.4mm. The default length of the active section is 3m, but can be specified for 1m through to 10m at the time of ordering.

The inactive section simply connects the active section to the transmitter and can be up to 10m long.




The GC60F transmits a "1.0" to indicate OK and a "0.0" to indicate that wetness or flood is detected. This value is recorded by the logger. The system does not provide an indication of the severity of wetness or flooding. The Darca software can be configured to alarm if a "0.0" condition is detected. This in turn can generate a SMS text message, local audible and/or visual alarm or trigger an autodialler.


If you require sensors, please order them separately.

The flood sensing cable active section length should be specified at the time of order. The code for each flood detection cable is as follows:

FC/Xm (where X is the length of the active section in metres).


WBG Wall bracket docking kit

This kit enables fitment of the transmitter's built-in wall bracket to difficult or uneven surfaces. The kit provides additional docking security.

The following products are supported:

  • All GD, GC, GL and GS series transmitters
  • RP250GD repeater and RC250 receiver


Common GenII Transmitter Specification

RF specification: EN300-220
RF power: 10mW
Environment specification  
  Compliant to EN300-220: -10 to +55°C
  Actual: -30 to +65°C
  Humidity: 100% non condensing
Environmental rating: IP40
Dimensions (footprint): 78 x 41mm
Transmission interval range: 1 sec to 4 hours
Indicator (red LED): transmit active/on/off
Control switch (concealed): test mode / hibernate
Antenna socket: SMA

Transmitter Specification

Active section of cable  
  Diameter: 3.4mm
  Length limit: 10m
Inactive section of cable  
  Length limit: 10m


Common to all transmitters

Gen II Quick Start Instructions

Specific to this family of transmitters

Flood transmitter datasheet