{"product_id":"lk-rumstermostat-s2-24v-no","title":"LK Systems S2 24V NO Room Thermostat, White","description":"\u003cp\u003eThe LK Systems S2 24V NO is an electronic room thermostat engineered for quiet and precise regulation of hydronic underfloor heating systems. Equipped with a noiseless solid-state Triac output and internal electronic feedback, it maintains balanced ambient temperatures with normally open actuators.\u003c\/p\u003e\n\u003cp\u003eThe LK Systems S2 room thermostat provides precise and dependable climate control for hydronic underfloor heating applications. Designed for seamless integration into 24 V AC systems with normally open (NO) actuator configurations, it continuously monitors and regulates ambient temperature to ensure an even, comfortable indoor climate.\u003c\/p\u003e\n\u003cp\u003eEquipped with a solid-state Triac switching output, the thermostat operates completely silently without the mechanical clicking sounds common to conventional relays. This noiseless performance makes it particularly suitable for bedrooms, living rooms, and quiet work environments.\u003c\/p\u003e\n\u003cp\u003eThe unit utilizes proportional-integral (PI) control logic supported by an internal resistance sensor and electronic feedback for stable temperature management. It features a temperature setting range of 5 to 45 °C and includes an external input for a -3 K temperature setback, enabling energy-efficient heating cycles.\u003c\/p\u003e\n\u003cp\u003eEngineered to handle multi-loop installations within a single heating zone, the thermostat can control up to five LK 24 V normally open thermoelectric actuators simultaneously. This allows consistent temperature regulation across larger living spaces or commercial zones.\u003c\/p\u003e\n\u003cp\u003eFeaturing a slim profile, the thermostat combines a RAL 9003 rear housing with a high-gloss white and ice-grey front finish. It offers versatile installation options, mounting directly onto interior wall surfaces over cabling or over standard electrical junction boxes using the included snap-on cover frame.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProduct Type: Electronic room thermostat\u003c\/li\u003e\n\u003cli\u003eApplication: Hydronic underfloor heating\u003c\/li\u003e\n\u003cli\u003eOperating Voltage: 24 V AC\u003c\/li\u003e\n\u003cli\u003eActuator Compatibility: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eOutput Type: Triac (noiseless solid-state)\u003c\/li\u003e\n\u003cli\u003eActuator Capacity: Up to 5 LK actuators\u003c\/li\u003e\n\u003cli\u003eControl Method: PI (Proportional-Integral) control\u003c\/li\u003e\n\u003cli\u003eSensor Type: Resistance sensor\u003c\/li\u003e\n\u003cli\u003eTemperature Setting Range: 5–45 °C\u003c\/li\u003e\n\u003cli\u003eTemperature Setback: -3 K via external input\u003c\/li\u003e\n\u003cli\u003eDisplay: Integrated digital display\u003c\/li\u003e\n\u003cli\u003eIngress Protection: IP30\u003c\/li\u003e\n\u003cli\u003eDimensions: 112 x 80 x 16 mm\u003c\/li\u003e\n\u003cli\u003eColour: RAL 9003 White with high-gloss white and ice-grey front\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LK Systems","offers":[{"title":"N - New","offer_id":68416774537606,"sku":"2434399-N","price":46.9,"currency_code":"EUR","in_stock":false},{"title":"A - Like New","offer_id":68416774570374,"sku":"2434399-A","price":46.9,"currency_code":"EUR","in_stock":true},{"title":"B - Very Good","offer_id":68416774603142,"sku":"2434399-B","price":46.9,"currency_code":"EUR","in_stock":true},{"title":"C - Minor Wear","offer_id":68416774635910,"sku":"2434399-C","price":46.9,"currency_code":"EUR","in_stock":false},{"title":"D - Major Wear","offer_id":68416774668678,"sku":"2434399-D","price":46.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3206\/8938\/files\/ProductImage37747023.jpg?v=1794493314","url":"https:\/\/re.now\/fi\/products\/lk-rumstermostat-s2-24v-no","provider":"Renow","version":"1.0","type":"link"}