The bench test 1: The long ranger | Archive Titles

Facts panel
Equipment	DS778
Product group	Long range PIR
Application	Hallways, warehouses, schools, department stores, large offices
Manufacturer	Bosch Security Systems
Address	P.O. Box 750, Uxbridge, UB9 5ZJ
Telephone	01895 878 088
Fax	01895 878 089
E-mail	security.systems@uk.bosch.com
Distributors	Various throughout UK
Trade price (ex VAT)	£35
Lens type	Mirrored
Interchangeable lenses	No
Range on centre axis	60m
No of detection zones	4
Coverage adjustment	4 mounting options
Dual/quad element sensor	No
Temperature compensation	Yes
Alarm period	3 seconds
Pulse count	No
Other signal processing options	Motion Analyser 2
Walk test facility	Yes
Housing material	High impact ABS plastic enclosure
Anti-masking facility	No
Self-testing functions	No
Power supply voltage	6-15v DC
Max current consumption	18mA
IP rating	No (internal use only)
Size in mm	146 x 95 x 635
Warranty	5 years

Product assessment
Design and design features	****
Circuitry and components	****
Ease of installation	****
Range and variety of functions	****
Technical advice and backup	***
Accompanying instructions	****
Value for money	***
Grading 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	*****
Grading Key: Detector operated correctly throughout test *** Detector false alarmed after: 80 % of test 50% of test * 20% of test **