NX-695 Water Sensor

[MrGibbage]

I can't find installation manuals anywhere online for these, so I can't get the details I need.
http://www.smarthomeusa.com/ShopByManufact...dX/Item/NX-695/
I have an NX-548E connected to my Elk M1G. Will I be able to use these sensors? What do they mean by "The sensor sounds an environmental alarm when it detects water"? Certainly the sensor itself isn't sounding an alarm of some sort??? And what am I looking at in the picture? How does it install?

 

[Neurorad]

I think this is it

http://www.worthingtondistribution.com/sol...4%20Install.pdf

pdf from Worthington Distributors

I think GE bought the original maker of this device, ITI, several years ago.

 

[PaulD]

I have same problem trying to find any tech info on the GE NX products. I have several I am interested in but I cannot get access to the GE security site where the tech info is kept. However, I can sometimes find that info burried on a vendors site. Check out this Link
Look at bottom of page and open the link to the 60-744-95R Spec Sheet. Installation for the water Sensor (and other NX products) are included in this document.
Appears the water sensor is composed of 2 parts connected by a wire. One end (sensor unit) goes on floor and the other (transmitter unit with battery) mounts on wall to keep it above water level. From everything I have seen, the transmitter is just an NO or NC circuit that your wireless receiver monitors as an alarm zone. I would also be interested to know if the transmitter is sending any special signal other than status of a NO or NC condition.

Edit...Neurorad beat me to it. His post has same info found in the link I provided.

 

[TXFlatLander]

According to the M1XRF2G manual, it says to use Crystal-based GE wireless and not SAW (see page 7 for a list of compatible devices). According to the NX-695 manual Neurorad posted, this is a SAW device. I assume the same holds true for the NX-548E as it does for the Elk receiver, but someone who is in the know can correct me if I am wrong.

 

[russban]

The manual for the ELK M1XRF wireless receiver says the following,

"The M1XRF receiver uses Crystal frequency technology and is a dual (2) antenna, phase diversity design capable of long range
wireless coverage. It comes packaged with two (2) optional ground plane antennas for extremely long range coverage
requirements.
NOTE: GE makes both Crystal and SAW technology transmitters in the 319.5MHz range. Crystal
technology has very narrow frequency tolerances and utilizes highly accurate filtering technology to
reduce noise susceptibility and provide the best possible range. SAW technology has a broader
frequency tolerance making them less costly and less accurate, generally resulting in shorter range.
The use of SAW transmitters with any Crystal based receiver is not a good practice due to the fact that
the broader frequency SAW transmission may be filtered out (ignored) by the narrower Crystal receiver.
While it may be possible to get a SAW transmitter to enroll into the M1XRF receiver IT IS NOT
RECOMMENDED due to the possibility of a transmission being filtered out (ignored)."

The manual for the NX548E receiver shows that it will recieve SAW transmissions and also lists the NX-695 as a compatible transmitter so my guess is that this sensor will work with the ELK M1 and NX-548E combo. I have never used a SAW sensor in any of my installations but I strongly suspect it will work since the NX-548E is designed to receive SAW.

When the manual states that "The sensor sounds an environmental alarm when it detects water" it just means that the zone should be programmed as Zone Type 25 Water Alarm 24 Hour, and when it goes into alarm the keypad will show that and if you have the system monitored the monitoring company will see it as a water alarm, not a burglar alarm and won't call police.

 

[jwilson56]

Has anyone used this with the M1XRF2G receiver?

 

[inline]

Has anyone used this with the M1XRF2G receiver?

I have one in my kids bathroom on the 2nd floor. Everytime I test it, it works fine...no problems.

 

[Ira]

Not sure I understand all the comments/implications in this thread, so can someone point out any errors in my summary?

1. The Elk M1XRF2G (the only Elk manufactured wireless receiver/expander product) uses "Crystal" instead of "SAW".
2. The GE NX-695 water sensor (only wireless water sensor manufactured by GE) uses SAW.
3. Elk recommends not using SAW transmitters with the M1XRF2G receiver.
4. Elk does not produce a SAW wireless receiver.
5. The GE NX-548E wireless receiver uses SAW, works with the M1G, and the NX695.
6. No Crystal water sensors are available.
7. The NX-548E requires M1G software level 4.x.x.x, while the M1XRF2G requires M1G software level 5.x.x.x.
8. You can only connect one NX-548E to the M1G. If reception distance is a problem, you can't add additional ones like you can with the M1XRF2G.

Are any of the above comments incorrect? Am I leaving out anything important?

Since the two receivers require different M1G software levels, does that mean you cannot have one of each (or one NX-548E and multiple M1XRF2G's) connected to the same M1G?

Thanks,
Ira

 

[WayneW]

1. The Elk M1XRF2G (the only Elk manufactured wireless receiver/expander product) uses "Crystal" instead of "SAW".
2. The GE NX-695 water sensor (only wireless water sensor manufactured by GE) uses SAW.
3. Elk recommends not using SAW transmitters with the M1XRF2G receiver.
4. Elk does not produce a SAW wireless receiver.
5. The GE NX-548E wireless receiver uses SAW, works with the M1G, and the NX695.
6. No Crystal water sensors are available.
7. The NX-548E requires M1G software level 4.x.x.x, while the M1XRF2G requires M1G software level 5.x.x.x.
8. You can only connect one NX-548E to the M1G. If reception distance is a problem, you can't add additional ones like you can with the M1XRF2G.

you cannot have one of each (or one NX-548E and multiple M1XRF2G's) connected to the same M1G

I believe all of the above statements are true.
The 5.x firmware also has other features that the 4.x does not, so there are other factors to favor 5.x.

 

[Ira]

So if I have a requirement for the M1XRF2G and Crystal transmitters, and also need a wireless leak detection system that will work with the M1G, how about the NX-695 sensors with the GE "Quik Bridge Loop Receiver". Here is the user manual. Looks like it makes up to eight wireless SAW transmitters (e.g., the NX-695) look like simple, hardwired zones to the M1G. It's more expensive, and it would take an input zone expander, but it does seem to allow a person to mix SAW transmitters with Crystal transmitters on the same M1G. Also, I don't see any limitations to using multiple Quik Bridge receivers.

Ira

 

[jwilson56]

I use SAW sensors with my M1XRF2G receiver with no problems.... I was hoping Spanky would step in and let us know if the firmware supports them.

 

[Digger]

I use SAW sensors with my M1XRF2G receiver with no problems.... I was hoping Spanky would step in and let us know if the firmware supports them.

I have done so also on a few systems with no problems. I just put one in Friday using the GE SAW Motions and the ELK Receiver. My I house I have been using the ELK Receiver since it came out and already had the GE SAW Motions and a water sensor so I left them in. No issues at all.

I would not do this with life safety devices.

 

[jwilson56]

Well I will start looking for a good price to snag one up to test.

 

[jwilson56]

What should Option 1 and 2 be set to as well as the other settings to get this to work? Also can it be set to NON Alarm?

Thanks

 

[jwilson56]

I have the sensor in my hands now. I could use some help with the setttings