NFPA 72, the National Fire Alarm and Signaling Code, states:
Household Fire Alarm Systems.
 Testing. Household fire alarm systems shall be tested
by a qualified service technician at least annually.  NFPA 72 14.4.6.1, 2013
If your smoke detectors haven’t been tested lately, please call us for an inspection and test.
Guard Tronic
(800) 542-7866
info@guardtronic.com