Frequently Asked Questions Signals View All the Answers What's wrong if the strobe does not flash, but the horn is working fine? What candela rating is a 15/75? Does Gentex manufacture an addressable signaling appliance? Does Gentex manufacture an explosion-proof product? What's wrong if the strobes are flashing slowly while the horns are working fine? What does the term "Anechoic Chamber" mean? What does the term "Reverberant Chamber" mean? Who determines the end-of-line resistor value? What are the ADA requirements for sleeping area? How do you calculate how many strobes and horn strobes you can use? How can the horn and strobe be isolated on a Gentex horn/strobe unit; functioning only the strobe portion of the unit? Syncronization Modules How many circuits can you have on the AVS module? How many modules can you sync together? Will the Gentex sync module work with other manufacturers' devices? Does the module come with a backbox? Can the AVS module sync through a power supply? How do you wire master and slave modules together? How do you silence the horns while the strobes are still flashing using the module? What type of power is to be applied to a synchronization module? Smoke Alarms How many legacy Gentex smoke alarms can be tandem interconnected? How many Dualink® Gentex smoke alarms can be tandem interconnected? How many combination smoke alarms and carbon monoxide alarms can be interconnected? What is a Dualink® feature alarm? What alarm series are classified as Legacy Smoke Alarms? Will the GN-503FF tandem interconnected with all Gentex tandem capable alarms? What alarm products are classified as Dualink® Alarms? Does Gentex have a trouble relay for loss of power? What is the difference between integral thermal and isolated thermal? Does Gentex have a supervised relay? What is the voltage on the tandem wire of Gentex smoke alarms? If the smoke alarm loses power will the relays and tandem line work on battery back up? Can a 24VDC horn, horn/strobe, or strobe be connected from the relay contact? Are the contacts dry contacts? How often should the 9VDC battery on the Gentex 9120 and 7109 smoke alarm series be replaced? Does Gentex manufacture a trouble contact? Can the smoke alarm detect cigarette smoke? How do you connect a GXS120 strobe to the 7100F/9120F, 710/7109CS? What is the difference between the 710/7109CS and the 710/7109CSX? How do you test the smoke alarms with the heat thermals? What is the frequency on the smoke alarms? What is the smoke alarm housing made of? When the smoke alarms are hooked in tandem, how can you tell which one is initiating? What size area does a Gentex smoke alarm cover? Where are Gentex smoke alarms and smoke detectors manufactured? How should Gentex smoke alarms and smoke detectors be disposed of? When turning the test knob to Test 1 or holding the test button, will the contacts change states? Are Gentex single/multiple station smoke alarms always non-latching (self-restoring)? Will a lithium battery work on Gentex Series smoke alarms with battery back-up? Why is it recommended that Gentex smoke alarms and smoke detectors be replaced every ten years? System Detectors Can you use the Gentex 8000 series as a stand-alone unit? Can the 8240 Series that includes the P (piezo) option be hooked in tandem? How do the 8000 series latching detectors reset? If hooking up the 8240 series smoke detector into a fire alarm panel, and someone removes the head of the detector, will it put the panel into trouble? What does reverse/local piezo mean? If we need the contact to close upon alarm, which contact wire do we use? If we need the contact to open upon alarm, which contact wire do we use? Since the 8000 series smoke detectors do not have the tandem connection, is it okay to mix them with other manufacturers in a series on a panel? Does Gentex manufacture two- or four-wire smoke detectors? What is the difference between a two-wire and four-wire smoke detector? Does Gentex have a single pull, double throw contact? Are the contacts dry contacts? What type of end-of-line resistor is needed on the 8000 series smoke detectors? Where are Gentex smoke alarms and smoke detectors manufactured? How should Gentex smoke alarms and smoke detectors be disposed of? When turning the test knob to Test 1, will the contacts change states? Why is it recommended that Gentex smoke alarms and smoke detectors be replaced every ten years? Important Notice The materials included on this website, including the Literature/Reference Material (e.g., technical bulletins, application guides, manuals, and reference materials), have been prepared by Gentex Corporation ("Gentex") for informational purposes only, are necessarily summary, and are not purported to serve as legal advice and should not be used as such. Gentex makes no representations and warranties, express or implied, that these materials are complete and accurate, up-to-date, or in compliance with all relevant local, state, and federal laws, regulations, and rules. The materials do not address all legal considerations as there is inevitable uncertainty regarding interpretation of laws, regulations, and rules and the application of such laws, regulations, and rules to particular fact patterns. Each person's activities can differently affect the obligations that exist under applicable laws, regulations, or rules. Therefore, these materials should be used only for informational purposes and should not be used as a substitute for seeking professional legal advice. Gentex will not be responsible for any action or failure to act in reliance upon the information contained in this web site. 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