How do I determine the age of an Apollo detector?

Since March 1981, each detector manufactured by Apollo has a date-coded serial number, the first four digits indicating the month and year of manufacture ie 1096 1234 shows that the detector was made in October 1996.

Detectors manufactured by Apollo which do not have a serial number can only have their age determined by referring to serialised records held at Apollo. The absence of a serial number would mean that the detector was made before March 1981.

Detectors manufactured by Apollo have a recommended working life of 10 years when used in dry, non-corrosive atmospheres and provided that they are regularly inspected, tested, cleaned and recalibrated as recommended. For further information, please visit our Cleaning & Recalibration page.

Most Apollo detectors will continue to operate within specification after 10 years' service, however, gradual deterioration of integrity and reliability should be allowed for.

In the interests of safety and the avoidance of unwanted alarms, Apollo recommends the rountine replacement of detectors after 10 years service.

Description Part number Date
Mark I ionisation smoke detectors
53541-101, 121
1969-1977
Mark I heat detectors
53531-101, 102, 201, 202, 303, 310
1973-1983
Mark II ionisation smoke detectors
53541-111, 113, 146, 147
1977-1985
Mark II optical smoke detectors
53551-101, 102, 103, 104
1983-1986
Series 30 heat detectors
53531-211, 214, 221, 231-234, 241
1984-1996
Series 30 ionisation smoke detectors
53541-151, 152, 156, 157
1984-1996
Series 20 optical smoke detectors
53551-201, 203, 204, 205
1986-1996
Series 90 temperature detector
54000-601
1987-1996
Series 90 ionisation smoke detector
54000-701
1986-1996
Series 90 optical smoke detector
54000-801
1986-1997
Series 60 range
55000-100, 101, 102, 103, 104, 200, 210 300
1992-
XP95 range
55000-400, 401, 500, 600, 885
1992-
Discovery
58000-400, 500, 600, 700
1998-
Series 65
55000-120, 121, 122, 215, 216, 217, 218, 219, 220, 315, 316, 317
1998-
AlarmSense
55000-190, 390
1998-
XPlorer
59000-405, 406, 605, 606,
2001-