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Old 08-22-2016, 11:38 AM   #1
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Alternative replacement for gas sensor?

I believe that all of us have the Safe-T-Alert LP/CO sensor from MTI Industries. The models available are:

70-742-* LP/CO Sensor/Alarm ($137.50 from MTI)
70-742-R-Kit-* Sensor/Alarm with relay and LP solenoid valve ($284.95 MTI)
* is BL for black, or WT for white. (they may have brown too)

Our coaches have the 70-742-R-Kit-* model. This model can be gotten at RV suppliers for less money.

The problem is that when the sensor/alarm goes there is no replacement for it, other then the full kit, with LP solenoid valve, which isn't needed. MTI doesn't advertise, but they will sell just the sensor/alarm for $165 (70-742-R-*)

Looks like MTI has us over the barrel. My main question to everyone is whether their is an alternative Sensor/Alarm available.
Hank
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Old 09-24-2016, 10:27 PM   #2
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Hank,

After my alarm kept going off in the middle of the night I blew out the sensor to get me a few extra nights. I did some research and couldn't find any cheaper alternatives. Ended up buying the $284 with solenoid and everything. Just replaced the sensor in the living room and kept the solenoid in my garage as a spare part.

-David
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Old 09-24-2016, 10:58 PM   #3
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If all you want is the alarm, here's one:

Duo LP & CO Alarm, White - Dometic 36681 - Propane Detectors - Camping World

Comes in black, also.

You could also replace it with separate LP and CO detectors.
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Old 09-25-2016, 08:58 AM   #4
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Since my Aug. post, I did purchase the MTI Series 70 dual alarm without the solenoid valve from our buddies at FR.

The model is 70-742-R-* (*is WT or BL). This is a unadvertised model number, which means the kit without the valve. FR's item number was 90M18790A. I paid $134; $161 after tax and shipping. I was confident it was the right part when FR told me it had a red, black and two white wires. The only other place that you can buy this is directly from MTI; but at a higher price.
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Old 09-29-2016, 08:50 PM   #5
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Hank,

Thanks for the update! This will help others as I had to pay the $200+ for sensor and solenoid.

-David
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