GRI 2600

Wired Flood Sensor

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The GRI 2600 is a wired flood sensor designed to trip an environmental zone on a security system. Ideally, this device is wall mounted ne...
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$24.99

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The GRI 2600 is a wired flood sensor designed to trip an environmental zone on a security system. Ideally, this device is wall mounted near the lowest point in your home or business. You can also install this sensor in areas near washing machines, sinks, and other appliances that tend to cause flooding. It is a very simple device. It is a contact with two metal probes. When these are shorted by water the zone will trip and send a fault back to the alarm panel.

This is a 4-wire sensor: 2 power connections and 2 data connections. The power connections can be landed on the alarm panel's keypad bus. This is 12VDC+ and a ground connection (i.e. terminals 4 and 5 on a VISTA-20P). The data connections should be landed on an open zone. You can supervise the wire by wiring a resistor in series at the end of line at the flood probe. Then set the input type to EOLR. If you do not use a resistor set the zone as NC (normally closed).

Generally, the zone is configured in a way that it is monitored 24/7 and does not rely on the armed state of the system. This way if it detects water at any time (even while the system is disarmed) you will be notified. For Honeywell panels, we recommend configuring the zone as 24 Hour Auxiliary. This will result in local keypad alarms and phone calls from the central station if you are monitored.

The GRI 2600 is an affordable alternative to the Honeywell 5821 which offers wireless temperature and flood detection. Although the 5821 is wireless back to the panel, you will still need the 470pb wired locally to the 5821 for flood sensing. The 2600 is an easy option if you are able to run a wire directly back to your alarm panel which generally is installed in the basement near commonly flooded areas.

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If you have a 2k wired in series at the last detector in the loop, you should have it to set for EOLR. If you are getting an alarm right away, you probably have a loose connection somewhere.
The resistor is at the "end of line" and i'm using the same resistor that I used for the other hardwired series sensors.
Set it to Input Type EOLR and wire the 2K resistor in series, either at the end of line for true line supervision or at the panel. Which resistor are you using?
Thanks, when programming the zone, ZT is 8 and if i put a EOL on the series what do I put there? NC NO EOL? I put EOL and NC and I get an immediate alarm once I exit programming mode. I tried NO and no alarm, but when testing sensor in water it doesn't trip. Thoughts?
Yes, you can run the normally closed 2600 Series devices in series just like a door/window sensor.
Can you run these in a series or they need to be alone on the run? If on a series, is it wired similar to entry/exit sensors?
Exactly, just use some 18AWG 2 conductor cable to extend the existing wiring on the 2600. You can use a pedestrian cable cover to hide the exposed wire run from the wall to the water heater. You will have to source the channeled cable cover mat elsewhere.
Unfortunately, we don't have that part on our site and I'm not seeing it available from our supplier either. However, you should be able to just wire the 2600 from your panel to the water heater so that you don't need the extra long probes.
I see that GRI makes a 2600 with two 36" probes, the GRI2600TP. Do you carry that? And will that work with the Vista 20p Panel? If not, what are some options to mount the 2600 near the water heater that is away from the wall? Thanks!
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