2GIG SMKT3-345

Wireless 2GIG Smoke, Heat, & Freeze Detector

2gig smkt3 345 wireless smoke heat and freeze detector

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The 2GIG SMKT3-345 is a wireless smoke, heat and freeze detector. There is a built-in 345MHz RF transmitter designed to send wireless sig...
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The 2GIG SMKT3-345 is a wireless smoke, heat and freeze detector. There is a built-in 345MHz RF transmitter designed to send wireless signals to a 2GIG Go!Control alarm system. The device is battery powered with 3 AAA Energizer E92 alkaline batteries or equivalent. The SMKT3 is an extremely versatile unit that will detect smoke, heat and freeze conditions within a 35 foot radius. The 2GIG smoke detector uses photoelectric technology to intelligently sense a fire before its too late. The heat detector uses both fixed temperature and rate-of-rise technologies. The rate of rise specifications require a 10 degree increase within 1 minute. The fixed temperature must reach 125F degrees and stay there for at least 3 minutes. This has to occur 3 times before the fixed temp trips the heat detector. Lastly, the freeze detection technology uses a fixed temp of 40F degrees and follows the same protocol as the fixed high temp. It must detect low temperature for 3 minutes and repeat itself 3 times. In other words, fixed temperature detection requires at least 9 minutes of detection.

When programming the sensor on the 2GIG Go!Control alarm panel, the equipment code should be set to 1058. First, you will need choose a sensor type. We recommend choosing "09 - 24 hour Fire without verification" for the smoke and heat zones. If you are setting up a freeze detection zone, we recommend "08 - 24 Aux." You can setup a phone call or text/email alerts for when the freeze detection zone trips. Then enter the 7 digit serial number for the specific sensor you are working with. You can auto-enroll the serial by pressing 'shift' then 'learn.' Then pop the tamper cover on the unit to transmit the serial to the panel.

Lastly, you will need to set the proper loop number based on the type of detection you would like to setup. Loop 1 is smoke, loop 2 is heat and loop 3 is freeze. You can configure up to 3 discrete zones with this single smoke detector by setting each loop number to each zone.

The Honeywell Lyric alarm system now supports this sensor with the release of the MR3 firmware update!


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Hi Joel, Which alarm system do you have? What errors is the keypad showing? Have you contacted your monitoring company to see if they can help you troubleshoot?
I replaced the batteries, did 2 resets and the unit continues to chirp about every minute. Can't seem to get it to stop so finally took it to garage. Now security system goes off thinking it cannot locate the smoke detector!!! Aaaaahhhhh! Any suggestions?
Hi Joel, After you replaced the batteries did you close the tamper cover fully and perform two consecutive disarms?
My unit was beeping about every 30'seconds. I changed the batteries and now it stops beeping, but flashes red, yellow, green in immediate succession? What does this mean?
Alkaline and lithium batteries have different battery life trajectories. Lithium stay powered for longer but then have a much faster, more exponential battery loss at the end of life. For this reason, you really should use the specified E92's. This way the low battery threshold will allow you the proper amount of time to swap the battery before the sensor completely dies.
Yeah, E92's are alkaline. Presumably using Energizer Ultimate Lithium (L92's) would last even longer. Energizer even advertises long life in smoke detectors. Though I guess nobody will give me an estimated life. Oh well. Thanks for updating/correcting this page.
According to the manual, this sensor requires "3 AAA Energizer E92 batteries (1.5 V1100mAh) or equivalent." These are technically Alkaline batteries. I have adjusted the language on this product page already. Unfortunately there is not an exact battery life expectancy stated in the documentation of this product. However most 345MHz devices last between 3-5 years. That is only an educated estimate.
The description says, "The device is battery powered with (3) AAA lithium batteries." Well, I found Duracell Procell Alkaline batteries in mine. At first I thought maybe the installer of my previous system mis-installed. But, I watched your YouTube video on this unit and I can see in the video your unit also had Duracell Procell Alkaline batteries, not lithium. Perhaps actual lithium batteries might be better? Like the Energizer Ultimate Lithium? Bottom line is, what batteries would you recommend and how long should they last?
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