BIRNS, Inc., 1720 Fiske Place, Oxnard CA 93033-1863 USA; Tel: +1-805-487-5393; Fax: +1-805-487-0427;
USA Toll-free: 1-888-BIRNS-88; Email: service@birns.com; http:\\www.birns.com

Product Comparison Sheet
BIRNS Dual Kelvin : Dual Fuel Pool Light

General Information The BIRNS Dual Kelvin is the world's simplest, most durable and dependable tungsten-halogen fuel pool lighting fixture. Its housings are free-flooding for high-efficiency water cooling, yet it is compatible with all commercial grade Class A GFCI's (ground-fault circuit interrupters). It is supplied with durable 120 volt 1,000-lamps, and has three beam angle options and two lamp material options. The BIRNS Dual Kelvin incorporates BIRNS underwater connectors, so that the power cords can be quickly detached, without tools.

Feature BIRNS Dual Kelvin Model 2501 Other Brand NQ-2000
Lamp: Two lamps, each of 1,000 watts; 120 volts; 16,000 lumens; 3200K; 4,000 rated hours lifetime Two lamps, each of 1,000 watts; 120 volts; 16,000 lumens; 3200K; 4,000 rated hours lifetime
Connector type: True underwater connectors Non-underwater 'Mogul' type screw-in sockets
Can cable be detached from lights, without tools? Yes! Cable attaches with underwater connectors, secured with stainless steel locking sleeves No; cable is bolted to the two housings with 6 sets of screws, washers, and nuts, none of which are captivated
Are lamp protectors captivated? Yes! The Lexan Lamp Protectors are positively captivated, and cannot be knocked off by blows from any direction No; Acrylic protectors are clipped to the housings with spring-loaded bands, which can be knocked off by a glancing blow
Material of lamp protector: Lexan polycarbonate, the most impact-resistance of all the thermoplastics-- over 30 times the impact resistance of safety glass. Provides over 300% the radiation tolerance of acrylic. Acrylic; below average of most plastics in radiation stability; acrylic becomes very brittle at elevated radiation doses.
Will light heads maintain set position? Yes! The Kelvins have doubly-captivated yoke nuts which cannot loosen during use. No; the yoke nuts are internal to the housing and loosen during use, so the light heads 'flop' to point straight down.
Is the unit seismically qualified? Yes! The BIRNS Dual Kelvin has been independently seismically tested and qualified by Wyle Laboratories (Test Report No. 54628). Unknown.
Is it easy to obtain spares and support? Yes! BIRNS has been serving the industry since 1954, and has a world-wide network of dealers and distributors. Technical information is available on-line at www.birns.com. No; this company has disappeared and may be out of business.