{"product_id":"ppi4-5mm-led","title":"PPI4-DC Points Position Indicator + Wired 5mm LEDs Red \u0026 Green","description":"\u003cp data-end=\"455\" data-start=\"85\"\u003eThe \u003cstrong\u003eBLOCKsignalling PPI4\u003c\/strong\u003e is a Points Position Indicator designed to monitor the switching voltage applied to points motors and display the last operated position using coloured LEDs. This version is supplied with 16 pre-wired 5mm LEDs (8 red and 8 green), making it quick and easy to install on control panels and mimic boards without the need for additional components.\u003c\/p\u003e\n\u003cp data-end=\"735\" data-start=\"457\"\u003eWhen a set of points is operated, the module detects the brief switching voltage applied to the points motor coils and updates the corresponding LED output. The selected route remains displayed until the points are switched again, with all states automatically stored in memory.\u003c\/p\u003e\n\u003cp data-end=\"980\" data-start=\"737\"\u003eThe PPI4 supports monitoring of up to eight sets of points and includes built-in diagnostic LEDs to assist with setup and troubleshooting. LED brightness can be adjusted directly on the module to suit different layouts and lighting conditions.\u003c\/p\u003e\n\u003chr data-start=\"675\" data-end=\"678\"\u003e\n\u003ch3 data-start=\"680\" data-end=\"695\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eMonitors the brief switching voltage across points motors to detect operation.\u003cbr data-end=\"1078\" data-start=\"1075\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eDisplays the last operated position using LEDs on a control panel or mimic.\u003cbr data-end=\"1156\" data-start=\"1153\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eSupports up to 8 sets of points (16 input channels).\u003cbr data-end=\"1211\" data-start=\"1208\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eAdjustable LED brightness for different environments.\u003cbr data-end=\"1267\" data-start=\"1264\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eAutomatically saves all states to memory when power is removed.\u003cbr data-end=\"1333\" data-start=\"1330\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eBuilt-in diagnostic LEDs for input and output status.\u003cbr data-end=\"1389\" data-start=\"1386\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eOpto-isolated inputs accept voltages from +5V to +25V.\u003cbr data-end=\"1446\" data-start=\"1443\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eSupplied with 8 red and 8 green pre-wired 5mm LEDs.\u003cbr data-end=\"1500\" data-start=\"1497\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"697\" data-end=\"1206\"\u003eNo additional resistors required, simplifying wiring and installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1208\" data-end=\"1211\"\u003e\n\u003ch3 data-start=\"1213\" data-end=\"1241\"\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1243\" data-end=\"1274\"\u003e12V DC regulated power supply required.\u003cbr data-end=\"1644\" data-start=\"1641\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1243\" data-end=\"1274\"\u003eTypical current consumption: approximately 50mA.\u003cbr data-end=\"1695\" data-start=\"1692\"\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1243\" data-end=\"1274\"\u003eRecommended supply rating: 0.25A to 1A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1499\" data-end=\"1502\"\u003e\n\u003ch3 data-start=\"1504\" data-end=\"1530\"\u003eWiring Diagram\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0994\/4009\/9673\/files\/ppi1_3de51863-2e50-4051-959f-051d9127ea75.png?v=1776357589\"\u003e\u003c\/p\u003e\n\u003chr data-start=\"1276\" data-end=\"1279\"\u003e\n\u003ch3 data-start=\"1281\" data-end=\"1307\"\u003eDocumentation \u0026amp; Support\u003c\/h3\u003e\n\u003cp data-start=\"1309\" data-end=\"1454\"\u003eFor detailed information on installation, wiring connections, and troubleshooting, please download the latest instruction manual:\u003c\/p\u003e\n\u003cp data-start=\"1309\" data-end=\"1454\"\u003e\u003ca rel=\"noopener\" title=\"PPI4\" href=\"https:\/\/drive.google.com\/file\/d\/1t_b-w5tl0T0sU7gvp58Au60SzOzamCzE\/view?usp=drive_link\" target=\"_blank\"\u003eProduct Instruction Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"BLOCKsignalling","offers":[{"title":"Default Title","offer_id":56860725084505,"sku":null,"price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/4009\/9673\/files\/PPI3LED_b25450bc-7d80-4dd7-87a8-4aa00b6a1ed9.png?v=1777331772","url":"https:\/\/blocksignalling.co.uk\/products\/ppi4-5mm-led","provider":"BLOCKsignalling","version":"1.0","type":"link"}