http://www.ec21.com/ec-market/dusk to dawn.html http://forman.en.ec21.com/LIGHT_BUOY--20_35281.htmlto install, simple to operate - Photocell activated: 'ON' at dusk, 'OFF' at dawn - Material : Strong, impact resistant20030419 http://dxsilicon.en.ec21.com/Solar_Street_Light--3423129_3453300.htmlto control the lamp. To do so, a timer or photocell does the job of switching the light from dusk to dawn. On some adva20091228 http://always96.en.ec21.com/POWER_STATION_Solar_Charge_Controller--2227495_2227496.htmlDusk-to-Dawn, On + setting hours, setting time ON/OFF. (For type ?I) ¿½ ¿½Real clock displ20091218 http://zhongdiannaya.en.ec21.com/Solar_Street_Light--3890674_4000416.htmldusk and dawn by light controller or Pre-defined time controller. Continuous operation up to five days can be real20091212 http://nanhua11.en.ec21.com/Solar_Aviation_Obstruction_Light--3945453_3945455.htmldusk and dawn. The product has the advantage of shockproof and can withstand the harsh effect of the environment. Flash20091117 http://ledvantage.en.ec21.com/Solar_Street_Lights--3884665_3885892.htmldusk to Dawn operation mode Ingress Protection : IP-65 (water and dust proof) Life Span: More than 50,000 hours Prod20091020 http://ashleelee.en.ec21.com/HSH_S021_Solar_Street_Lamp--3765516_3765700.htmlDusk to Dawn Operation .No electricity connection needed .Ultra High Efficiency .Polished reflectors maximizing t20090919 http://sztianlisolar.en.ec21.com/Solar_Garden_Light--3122218_3124010.htmldusk and off at dawn Up to 8 hours lllumination with fully charged No wiring and electricity cost needed 2-3 years l20090911 http://kaiming09.en.ec21.com/Solar_Mark_Light--3775701_3775702.htmlautomatically at dusk and shut off at dawn 4. Corrosion proof construction��reat for outdoor decorative lighting. 20090828 http://begreenpower.en.ec21.com/Solar_Wall_Light--3319939_3320106.htmlDusk and Off at Dawn Up to 6 hours lllumination with fully charged &nbs20090623 http://zjkcledsky.en.ec21.com/Solar_Light--3608532_3608533.htmlto operate the light for 10-11 hours daily. The system is provided with automatic ON/OFF time switch for dusk to down 20090615 http://alexyfy3.en.ec21.com/China_Factory_Exporter_of_Hi--3481483_3481515.htmlto turn them on at dusk, off at dawn, or activate automatically in dark weather. Also, it is not uncommon for street li20090413 http://maggie37.en.ec21.com/175W_Mercury_Vapor_Light--631925_3431385.htmldusk to dawn operation. 3. 24'' curved mounting iron pipe avialible 4. Reflector: 12'' or 9'' 5. can match 175W mercury20090323 http://anneyang.en.ec21.com/Solar_Holiday_LED_String_Blue--3421938_3422169.htmlup during the day, automatically illuminate at dusk and switch off at dawn. 15. Illumination time: above 15hours 20090319 http://2975555.en.ec21.com/Sun_Jar--3312865_3312883.htmldusk till dawn. And by fights Lex Luthor, we mean glows. The Sun Jar includes a solar cell , battery, and LED lights. 20090305 http://faryuan.en.ec21.com/LED_STREET_LAMP_China_Factory--3175883_3175884.htmlto turn them on at dusk, off at dawn, or activate automatically in dark weather. Also, it is not uncommon for street li20090303 http://arpc.en.ec21.com/Home_Security_Product--3112302_3338422.htmldusk, then switches on and off at random intervals for a set time, (or until dawn), every day until mode is set to norm20090210 http://risenlight.en.ec21.com/Outdoors_Solar_Lights--3025039_3026020.htmllight 7~8hrs everyday from the dusk to the dawn and continuously working 4 days after fully charged High:6-8M 20090123 http://chinafaryuan.en.ec21.com/High_Power_LED_ROAD_LAMPS--3176697_3176698.htmlto turn them on at dusk, off at dawn, or activate automatically in dark weather. Also, it is not uncommon for street li20081209 http://rajekc.en.ec21.com/Solar_Street_Light--2968270_3039260.htmlto 4 days system autonomy Auto on / off, dusk-to-dawn operation Ready to install, negligible maintenance Applicati20080917 http://selinachen1.en.ec21.com/Solar_Garden_Light--2983061_2983075.htmlDusk and Off at Dawn 5. Up to 6- 8 hours lllumination with fully charged 6. &n20080818 http://eleczone.en.ec21.com/Solar_Light--2695517_2695538.html Light activated sensor turns on at dusk & off at dawn. Solar panel recharges batteries for power up to 8 hours. The 20080709 http://mvsystems.en.ec21.com/Solar_LED_Street_Light--2573191_2573205.htmlDusk to dawn 12 Hrs. back-up Technical Specifications Height :15 Mts Solar Panel : 20W polycrystalline / monocrystal si20080110 http://chromspec.en.ec21.com/Solar_Garden_Light--1046490_1046521.htmlDusk to Dawn operation, Auto Switch on/off. 24 hours (2 days) continuous operation. One year system warranty excluding 20051111 http://sunbeame.en.ec21.com/Solar_Street_Light--1247714_2118280.htmlto conventional lighting to provide light from dusk to dawn. Each streetlight is powered by a solar module, which conve20071014