{"id":963,"date":"2023-10-27T17:32:35","date_gmt":"2023-10-27T09:32:35","guid":{"rendered":"https:\/\/leaditop.com\/?post_type=product&#038;p=963"},"modified":"2026-11-04T15:49:47","modified_gmt":"2026-11-04T07:49:47","slug":"%e5%a4%95%e6%9a%ae%e3%82%8c%e3%81%8b%e3%82%89%e5%a4%9c%e6%98%8e%e3%81%91%e3%81%be%e3%81%a7-ip66-%e3%83%95%e3%82%a9%e3%83%88%e3%82%bb%e3%83%ab-105-305v-%e8%a1%97%e7%81%af%e3%81%a8%e9%9d%b4%e7%ae%b1","status":"publish","type":"product","link":"https:\/\/leaditop.com\/ja\/product\/dusk-to-dawn-ip66-photocell-105-305v-street-lights-and-shoebox-light-fixtures-day-night-sensor\/","title":{"rendered":"\u5915\u66ae\u308c\u304b\u3089\u591c\u660e\u3051\u307e\u3067\u4f7f\u3048\u308bIP66\u30d5\u30a9\u30c8\u30bb\u30ebLT124L 105-305V\u8857\u8def\u706f\u3084\u9774\u7bb1\u578b\u7167\u660e\u5668\u5177\u7528\u663c\u591c\u30bb\u30f3\u30b5\u30fc"},"content":{"rendered":"<h2>Why the LT124L<\/h2>\n<p>One photocell platform that adapts to the project instead of forcing the project to adapt to it: an IR phototransistor that holds its threshold for years, MOV surge protection you size from 320J to 1,280J, delay and fail-mode options for the site&#8217;s real conditions, IP66\/67 sealing, and a part number that records every choice. ANSI C136.10 compliant, UL773 listed design, \u221240\u00b0C to +70\u00b0C, 3-year one-for-one warranty \u2014 specified once, documented forever.<\/p>\n<h2>Built for the Field, Documented for the Submittal<\/h2>\n<ul>\n<li><strong>Reliable sealed relay<\/strong> on an FR4 fibreglass PCB \u2014 the switching element is sealed against dust and moisture.<\/li>\n<\/ul>\n<ul>\n<li><strong>Operates down to 90V AC<\/strong> on a 105\u2013305V supply window \u2014 headroom for long runs and voltage sag.<\/li>\n<\/ul>\n<ul>\n<li><strong>Fail mode as a choice:<\/strong> fail-off standard, fail-on where the application requires lighting to stay up if the control fails.<\/li>\n<\/ul>\n<ul>\n<li><strong>IP66 standard, IP67 optional<\/strong> \u2014 jet-water tight, with immersion protection where wash-down or flooding is expected.<\/li>\n<\/ul>\n<ul>\n<li><strong>UL94 V-0 flame-resistant<\/strong> housing (anti-UV impact polypropylene, 2.00mm) over a high-temperature PBT base.<\/li>\n<\/ul>\n<ul>\n<li><strong>Drop-tested:<\/strong> 1m onto concrete without housing damage or change of electrical operation.<\/li>\n<\/ul>\n<ul>\n<li><strong>RoHS compliant, ISO-manufactured, UL773 \/ ANSI C136.10<\/strong> \u2014 with month\/year of manufacture and serial number marked on every unit.<\/li>\n<\/ul>\n<h2>Follow these four steps to install the Twist-lock photocell:<\/h2>\n<p><iframe title=\"Is Your Twist-lock Photocell Properly Locked After Installation?#PhotocellInstallation\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/VQicZIgDzPU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<ol>\n<li>Align the larger pin with the larger hole and insert it<\/li>\n<li>Push downward<\/li>\n<li>Twist clockwise to lock<\/li>\n<\/ol>\n<p>The twist-lock design only holds firm after the clockwise rotation. Skipping that last turn leaves the photocell sitting in the socket without being mechanically locked \u2014 which is why it may feel unstable or pull out easily.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-6588 \" src=\"http:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams.jpg\" alt=\"twist- lock photocellI installation-Diagrams\" width=\"800\" height=\"411\" srcset=\"https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams.jpg 2156w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-300x154.jpg 300w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-1024x526.jpg 1024w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-768x395.jpg 768w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-1536x789.jpg 1536w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-2048x1052.jpg 2048w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-18x9.jpg 18w, https:\/\/leaditop.com\/wp-content\/uploads\/2023\/10\/Installation-Diagrams-600x308.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Key Specifications<\/h2>\n<table>\n<tbody>\n<tr>\n<td>Item<\/td>\n<td>Specification<\/td>\n<\/tr>\n<tr>\n<td>Model<\/td>\n<td>LT124L twist-lock electronic photocontrol<\/td>\n<\/tr>\n<tr>\n<td>Standards<\/td>\n<td>ANSI C136.10, UL 773<\/td>\n<\/tr>\n<tr>\n<td>Rated voltage<\/td>\n<td>120\u2013277V AC (applicable 105\u2013305V), 50\/60 Hz<\/td>\n<\/tr>\n<tr>\n<td>Rated load<\/td>\n<td>1000W \/ 1800VA<\/td>\n<\/tr>\n<tr>\n<td>LED rating<\/td>\n<td>2A E-Ballast<\/td>\n<\/tr>\n<tr>\n<td>Turn-on \/ off<\/td>\n<td>16 \u00b1 6 lux on; off at 1.5 \u00d7 turn-on level<\/td>\n<\/tr>\n<tr>\n<td>Time delay<\/td>\n<td>Instant ON; 3\u20136s OFF delay (longer options available)<\/td>\n<\/tr>\n<tr>\n<td>Light sensor<\/td>\n<td>IR-filter phototransistor (sealed; CDS not used)<\/td>\n<\/tr>\n<tr>\n<td>Surge protection<\/td>\n<td>6kV; MOV from 320J (options to 1,280J)<\/td>\n<\/tr>\n<tr>\n<td>Insulation resistance<\/td>\n<td>&gt;500 M\u03a9<\/td>\n<\/tr>\n<tr>\n<td>Ingress protection<\/td>\n<td>IP66 standard; IP67 optional<\/td>\n<\/tr>\n<tr>\n<td>Operating temperature<\/td>\n<td>\u221240\u00b0C to +70\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Power consumption<\/td>\n<td>\u22640.5W at 120V AC<\/td>\n<\/tr>\n<tr>\n<td>Housing<\/td>\n<td>Anti-UV impact polypropylene cover (2.00mm), UL94 V-0; PBT base<\/td>\n<\/tr>\n<tr>\n<td>Switching life<\/td>\n<td>&gt;5,000 operations at rated load<\/td>\n<\/tr>\n<tr>\n<td>Warranty<\/td>\n<td>3 years (one-for-one replacement)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Applications<\/h2>\n<ul>\n<li>LED luminaires requiring dusk-to-dawn control<\/li>\n<\/ul>\n<ul>\n<li>Solid-state ballast \/ driver loads: CFL, induction, electronic HID<\/li>\n<\/ul>\n<ul>\n<li>LED, HID, induction, fluorescent and halogen systems<\/li>\n<\/ul>\n<ul>\n<li>Roadways and street lighting<\/li>\n<\/ul>\n<ul>\n<li>Parking lots and security lighting<\/li>\n<\/ul>\n<h2>FAQ<\/h2>\n<p><strong>Q1. What is the difference between the LT124L and a fixed-configuration photocell?<\/strong> Every field-relevant parameter \u2014 turn-on level, time delay, fail mode, MOV joules, IP rating and cover colour \u2014 is a selectable option ordered through the part-number code, so the product matches the site rather than the reverse.<\/p>\n<p><strong>Q2. Why is an IR phototransistor better than a CDS cell?<\/strong> CDS cells drift with temperature and ageing, shifting the switching threshold over time. The LT124L&#8217;s sealed IR-filter phototransistor holds its 16 \u00b1 6 lux window stable across seasons and the full service life.<\/p>\n<p><strong>Q3. How much surge protection does the LT124L have?<\/strong> The standard configuration carries a 320J MOV with 6kV surge protection; 640J, 960J and 1,280J MOV options are available for higher-exposure sites.<\/p>\n<p><strong>Q4. What does &#8220;Fail-Off&#8221; and &#8220;Fail-On&#8221; mean?<\/strong> It is the state the lighting takes if the control fails. Fail-Off (standard) is the economical default; Fail-On is specified where lighting must remain up after a control failure \u2014 for example security and safety lighting.<\/p>\n<p><strong>Q5. Can the LT124L run LED fixtures?<\/strong> Yes \u2014 the 2A electronic-ballast rating is designed for LED drivers and other solid-state loads (CFL, induction, electronic HID), alongside incandescent and ballasted loads up to 1000W\/1800VA.<\/p>\n<p><strong>Q6. What documentation comes with an order?<\/strong> Each unit is marked with month\/year of manufacture, serial number, model description, voltage range and load rating; datasheets and test documentation are provided with the quotation.<\/p>\n<p><strong>Build your part number, send it over.<\/strong> Choose the cover colour, turn-on level, delay, fail mode, MOV rating and IP grade from the table above \u2014 or tell us the site conditions and we will specify the configuration for you. Quotations, datasheets and samples are returned within 48 hours.<\/p>\n<p>[Request a Quote for LT124L] \u00b7 [Get a Sample] \u00b7 <strong><a href=\"mailto:info@leaditop.com\">info@leaditop.com<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u793e\u306e\u8857\u8def\u7167\u660e\u7528\u5149\u96fb\u30bb\u30eb\u306fANSI C136.10\u306b\u6e96\u62e0\u3057\u3066\u304a\u308a\u3001\u5915\u66ae\u308c\u304b\u3089\u591c\u660e\u3051\u307e\u3067\u3001\u8cbb\u7528\u5bfe\u52b9\u679c\u304c\u9ad8\u304f\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u81ea\u52d5\u7167\u660e\u5236\u5fa1\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u7167\u660e\u30b7\u30b9\u30c6\u30e0\u306e\u6027\u80fd\u3092\u6700\u9069\u5316\u3057\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u7bc0\u7d04\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u305f\u3053\u308c\u3089\u306e\u5149\u96fb\u30bb\u30eb\u306f\u3001\u9ad8\u5ea6\u306a\u96fb\u5b50\u56de\u8def\u3068\u5b89\u5b9a\u3057\u305f\u30d5\u30a9\u30c8\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u5149\u30bb\u30f3\u30b5\u30fc\u3092\u63a1\u7528\u3057\u3001\u4e00\u8cab\u3057\u305f\u30aa\u30f3\/\u30aa\u30d5\u6a5f\u80fd\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n<p>\u88fd\u54c1\u60c5\u5831<br \/>\n\u30e2\u30c7\u30eb:LT124L<br \/>\n\u898f\u683c\uff1aANSI C136.10 &amp; UL773<br \/>\n\u5b9a\u683c\u96fb\u5727\uff1a120V-277V\uff08\u9069\u7528\u7bc4\u56f2\uff1a105-305V\uff09<br \/>\n\u5b9a\u683c\u8ca0\u8377\uff1a1000W\/1800VA<br \/>\nLED\u5b9a\u683c\uff1a2A E-\u30d0\u30e9\u30b9\u30c8<br \/>\n\u70b9\u706f\u6642\u7167\u5ea6\uff1a10\uff5e16\u30eb\u30af\u30b9<\/p>\n<p>\u30aa\u30f3\/\u30aa\u30d5\u6bd4\uff1a1:1.5<br \/>\n\u6642\u9593\u9045\u5ef6\uff1a3\uff5e10\u79d2<br \/>\n\u30b9\u30a4\u30c3\u30c1\uff1a\u5b9a\u683c\u8ca0\u8377\u30675000\u56de\u4ee5\u4e0a\u306e\u30aa\u30f3\/\u30aa\u30d5\u64cd\u4f5c<br \/>\n\u6d88\u8cbb\u96fb\u529b\uff1a120VAC\u30670.5\u30ef\u30c3\u30c8\u4ee5\u4e0b<br \/>\n\u30ab\u30d0\u30fc\uff1a\u7d2b\u5916\u7dda\u8010\u6027\u8010\u885d\u6483\u30dd\u30ea\u30d7\u30ed\u30d4\u30ec\u30f3<br \/>\n\u57fa\u6750\uff1a\u8010\u9ad8\u6e29\u30dd\u30ea\u30d6\u30c1\u30ec\u30f3\u30c6\u30ec\u30d5\u30bf\u30ec\u30fc\u30c8<br \/>\n\u30d5\u30a7\u30a4\u30eb\u30e2\u30fc\u30c9\uff1a\u30aa\u30f3\u307e\u305f\u306f\u30aa\u30d5<\/p>","protected":false},"featured_media":2373,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[41,183,30],"product_tag":[],"class_list":["post-963","product","type-product","status-publish","has-post-thumbnail","product_cat-photocontrollers","product_cat-product","product_cat-twist-lock-photocontrollers","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/product\/963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/comments?post=963"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/media\/2373"}],"wp:attachment":[{"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/media?parent=963"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/product_brand?post=963"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/product_cat?post=963"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/leaditop.com\/ja\/wp-json\/wp\/v2\/product_tag?post=963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}