The bench test 1: Black mirror | Archive Titles

Facts panel
Equipment	IR 120C
Product group	Passive infrared
Application	Intrusion detection
Manufacturer	Alarmcom
Address	Ibis House, Riverside Estate, London Colney, Herts. AL2 1HJ
Telephone	01727 738500
Fax	01727 827260
Available from	Alarmcom, as above
Trade price (ex VAT)	£14.95
CE Mark awarded	Yes
Lens type	Black mirror with triplex optics
Interchangeable lenses	Standard wide angle with look down zone or continuous curtain
Range on	Wide angle 12m or
centre axis	curtain 20m
No of detection zones	52
Coverage adjustment	Optional wall and ceiling adjustable mounting brackets
Dual/quad element sensor	Dual
Temperature compensation	Yes
Alarm period	2 – 3 sec
Other signal processing options	Four application settings, 15 Kg pet immunity, or 40Kg with pet clip fitted
Walk test facility	Yes
Housing material	ABS Cycolac S701S to UL 94HB
Self-testing functions	Yes
Power supply voltage	8 – 16v DC
Max current consumption	6mA
IP rating	IP41
Size (mm)	115H x 50W x 41D
Warranty	5 years

Product assessment
Design and design features	****
Circuitry and components	****
Ease of installation and wiring	****
Range & variety of functions	***
Accompanying instructions	***
Technical advice and backup	***
Value for money	****
Key: Outstanding *** Very good Above average * Average ** Below average *

Stability assessment
Tolerance to cold air turbulence	*****
Tolerance to hot air turbulence	*****
Tolerance to quartz halogen lamp	*****
Tolerance to fluorescent tube	*****
Tolerance to insect test	*****
Key: Detector operated correctly throughout test *****