Bosch D9412GV4 Owner's Manual page 68

68 en | B94x/B93x Actions menu Control Panels
be present or the detector may be faulty. Check to be
certain that there is no smoke, fire, or other danger
present.
If you cannot reset the detector or sensor, contact your
security company.
2014.04 | 05 | F.01U.287.176 Bosch Security Systems, Inc.