I have a DSC smoke detector model FSA-210BT at home for many years; now it starts beeping once a few minutes, as if it needs battery or servicing. I see there are 2 wires connected to the unit but no
I opened the unit (unscrew from the mount) and saw two wires connected to the unit; no apparent battery to be replaced.
Home - DSC - FSA-210BT - 2-Wire Photoelectric Smoke Detector w/Heat
Answers & Comments
Your smoke detector is probably wired to an alarm system. The beeping probably indicates that the drift compensation is out of calibration. This is usually due to dirt or power issues. The cut sheet from the manufacturer indicates that the drift compensation can be reset after the smoke chamber has been cleaned, but I have never been able to successfully do so in spite of following the instructions. If your alarm system is being monitored, it would probably be best to have the alarm company replace it. If you prefer to do it yourself, make sure you have your system placed on test with the monitoring center before disconnecting anything to prevent an unwanted visit from the fire dept. The connector on the back can be removed from the device without removing the wires...insert the original connector into the new smoke...be advised that the surge could cause the device to go into alarm, but it should reset at your keypad without a problem. Unless you are completely comfortable doing it yourself, I would recommend having it done by a pro.
Check the date, they are good just for 4-5 years
Micheal, I hate to tell you that your answer is actually not correct. CO detectors are only good for 5-6 years on average. Smoke alarms, ie, the alarms that connect to household 110VAC, are to be replaced every 10 years by code (NFPA72). The 2-wire detector described is a low voltage (12VDC) detector typically connected to a combination burglar/fire alarm panel. If the system is being maintained by a professional alarm company there is no finite date; otherwise, the 10 year rule should probably apply. Check the requirements for residential installations (I think it's in Chapter 11) in NFPA72 for clarification.