DeTech’s product warranties are longer and cover more than any other fire safety products in the world. That is because DeTech’s quality is second to none.

Quality DeTech products require little or no maintenance and have built in features to let you know when there is a problem before you need it. To ensure that your DeTech products are in the best condition at all times, see below for more details on warranty and maintenance.

DeTech’s local independant dealers cover most parts of the U.S. and usually will service any products at no charge if you are within a reasonable distance from that dealer. If you do not have a local dealer nearby you may also call our international headquarters for telephone assistance 262-236-0123. Outside the U.S. or Canada please call 414-349-0931 for service questions.

Test your detectors annually using the following steps:

If your smoke detectors are monitored be sure to put your system on “test” with the monitoring company first. The phone number is located on or near your base station or is available through your local dealer.

1. Press and hold the test button until the red light begins to flash.

2. Count the flashes.

Four to seven flashes is normal and means your detector is operating properly.

DeTech smoke detectors come with complete instructions for proper cleaning. If you have misplaced your instructions, be sure to print this page. Please contact a DeTech representative if you have any questions.

Clean the detector cover with a dry or damp (water) cloth as needed to keep it free from dust and dirt. When necessary, clean the detector interior and replace the smoke chamber as follows:

1. Remove the detector from its mounting base and remove the batteries.
2. Slide a flat-blade screwdriver in the slot on the detector cap and gently push the handle down to pry the cap up and off.
3. Press in on the sides of the smoke chamber and pull it up and away from the detector and discard.
4. Blow out or use a soft-bristled brush to remove dust and dirt from the smoke chamber base.
5. Line the new smoke chamber up with the smoke chamber base and snap down into place.
6. Replace the detector cap by lining the cap up with the smoke detector. Insert the cap into the smoke detector and turn clockwise approximately 15°. It should snap firmly into place.
7. Observing the proper polarity, put the batteries back in the detector and replace the battery compartment cover.
8. Reattach the detector to its mounting base.
9. Test the detector sensitivity.

When you get a low battery chirp and you susepect the batteries are still good you can reset the detector by doing the following: Remove the detector from the mounting plate and remove the batteries. Press and hold the test button for about 10 seconds. Wait 30 seconds or more. Replace the batteries and remount the detector. If the chirp returns, you do indeed have low batteries and can find them locally at any hardware store.

How to Power and Fuse the DeTech FST Series Heat Detector
If your alarm has activated due to an overheated condition, you will need to order a replacement fuse from your representative. If the fuse has simply been removed, you can reapply it with the steps below.