{"product_id":"beckhoff-kl1804-programmable-logic-controller-module","title":"Beckhoff KL1804 Programmable Logic Controller Module","description":"\u003cdiv\u003e\u003cp\u003eBeckhoff KL1804 is a four-channel digital input terminal for the K-Bus that accepts 24 V DC field signals and transmits them galvanically isolated to the master automation device. Belonging to Beckhoff's KL1xxx bus-terminal family, the module presents four input bits in the controller's process image and requires no address or configuration settings. Its inputs are rated for 24 V DC with a 3 ms input filter, offering typical input current of 3 mA per channel; the K-Bus current draw is typically 10 mA, and the module's power-contact current is about 1 mA plus load; the device provides up to 500 V isolation between field and K-Bus. Physical and connection specs include dimensions of 12 mm width by 100 mm height by 68 mm depth, weight around 60 g, and conductor options: solid wires 0.08–1.5 mm2; stranded wires 0.25–1.5 mm2; ferrules 0.14–0.75 mm2; solid wires connect directly by plug-in, while stranded wires and ferrules use a spring-clamp actuated by a screwdriver. Technically, KL1804 uses 3-leitertechnik (three-wire technique) and presents a 4-bit process image width, making it suitable for deploying digital sensors such as pushbuttons and basic sensors in industrial automation where galvanic isolation and compact form factor matter.\u003c\/p\u003e\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51676799009070,"sku":null,"price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_8cb315ba-7eac-4908-b97a-d3c833900a7e.jpg?v=1769553577","url":"https:\/\/plgautomation.com\/products\/beckhoff-kl1804-programmable-logic-controller-module","provider":"PLG Automation ","version":"1.0","type":"link"}