{"product_id":"rex-c100-digital-pid-temperature-controller-relay-ssr-output-k-type","title":"REX-C100 PID Temperature Controller – Relay \u0026 SSR, 0–1300°C","description":"\n\u003ch2\u003eREX-C100 Digital PID Temperature Controller with Relay \u0026amp; SSR Output\u003c\/h2\u003e\n\u003cp\u003eTake precise control of your heating and cooling systems with the \u003cstrong\u003eREX-C100 Digital PID Temperature Controller\u003c\/strong\u003e. Whether you're managing a kiln, incubator, brewing setup, industrial oven, or DIY temperature control project, this compact and reliable thermostat delivers accurate, repeatable results every time. Compatible with both Relay and SSR (Solid State Relay) output configurations, the REX-C100 is a versatile solution for hobbyists and professionals alike.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePID Control Algorithm:\u003c\/strong\u003e Proportional-Integral-Derivative logic minimizes overshoot and delivers stable, precise temperature regulation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Output Options:\u003c\/strong\u003e Available in Relay output and SSR output configurations — choose the set that matches your application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Supports 0°C to 1300°C measurement range using a K-type thermocouple probe\/sensor (included in select sets).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact 1\/16 DIN Panel-Mount Design:\u003c\/strong\u003e Fits standard panel cutouts for easy integration into control panels and enclosures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital LED Display:\u003c\/strong\u003e Clear, easy-to-read display shows process value (PV) and set value (SV) simultaneously.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Set Configurations:\u003c\/strong\u003e Choose from Relay Output Set 1 or Set 2, or SSR Output Set 1, Set 2, or Set 3 — each with different bundled accessories to suit your project needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto\/Manual Tuning:\u003c\/strong\u003e Built-in auto-tuning function simplifies setup and optimizes PID parameters for your specific load.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable in 5 Color Options:\u003c\/strong\u003e Select the style that suits your control panel aesthetic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSet Configurations at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Output Set 1:\u003c\/strong\u003e Controller unit only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Output Set 2:\u003c\/strong\u003e Controller + K-type thermocouple probe\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSSR Output Set 1:\u003c\/strong\u003e Controller unit only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSSR Output Set 2:\u003c\/strong\u003e Controller + K-type thermocouple probe\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSSR Output Set 3:\u003c\/strong\u003e Controller + K-type thermocouple probe + SSR module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e REX-C100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Type:\u003c\/strong\u003e K-type thermocouple\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 0°C – 1300°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e Relay or SSR (depending on set selected)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Mode:\u003c\/strong\u003e PID \/ ON-OFF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Dual LED (PV \u0026amp; SV)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e 1\/16 DIN panel mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e AC 100–240V\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eKilns \u0026amp; pottery furnaces\u003c\/li\u003e\n  \u003cli\u003eHome brewing \u0026amp; fermentation chambers\u003c\/li\u003e\n  \u003cli\u003eEgg incubators \u0026amp; terrariums\u003c\/li\u003e\n  \u003cli\u003eIndustrial ovens \u0026amp; heat treatment\u003c\/li\u003e\n  \u003cli\u003eDIY temperature control projects\u003c\/li\u003e\n  \u003cli\u003eSous vide cooking setups\u003c\/li\u003e\n  \u003cli\u003e3D printer heated bed control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe electrical equipment installation and control system best practices, visit \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA's Electrical Safety resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the Relay output and SSR output versions of the REX-C100 PID Temperature Controller?\u003c\/h4\u003e\n\u003cp\u003eA: The Relay output version uses a mechanical relay to switch your heating or cooling element on and off. It is suitable for lower-frequency switching applications and resistive loads. The SSR (Solid State Relay) output version sends a low-voltage signal (typically 0–5V or 3–32V DC) to trigger an external SSR module, enabling faster, silent, and longer-lasting switching — ideal for higher-cycle or precision-critical applications like sous vide or 3D printing. SSR Output Set 3 includes an SSR module bundled with the controller and K-type probe for a complete, ready-to-use solution.\u003c\/p\u003e\n\u003ch4\u003eQ: What is a K-type thermocouple and is it included with the REX-C100?\u003c\/h4\u003e\n\u003cp\u003eA: A K-type thermocouple is a widely used temperature sensor made from two dissimilar metal alloys that generate a voltage proportional to temperature. The REX-C100 is designed to accept K-type thermocouple input and can measure temperatures from 0°C to 1300°C. The K-type probe is included in Relay Output Set 2, SSR Output Set 2, and SSR Output Set 3. Sets 1 (Relay and SSR) include the controller unit only, so you would need to source your own probe separately.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I install and set up the REX-C100 Digital PID Temperature Controller?\u003c\/h4\u003e\n\u003cp\u003eA: The REX-C100 uses a standard 1\/16 DIN panel-mount format. Cut a standard panel opening, slide the unit in, and secure it with the provided mounting clips. Connect your thermocouple probe to the input terminals and your heating\/cooling load to the output terminals according to the wiring diagram. Power the unit via AC 100–240V. Use the built-in auto-tuning (AT) function to automatically calculate optimal PID parameters for your load — simply set your target temperature, activate AT mode, and the controller does the rest.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the REX-C100 suitable for DIY home projects as well as industrial use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The REX-C100 is popular among both DIY enthusiasts and professionals. Its wide temperature range (0–1300°C), flexible output options, and compact DIN form factor make it suitable for everything from home brewing fermentation chambers and egg incubators to industrial kilns and heat-treatment ovens. Always ensure proper electrical safety precautions are followed during installation.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the Relay output and SSR output versions of the REX-C100 PID Temperature Controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Relay output version uses a mechanical relay to switch your heating or cooling element on and off. It is suitable for lower-frequency switching applications and resistive loads. The SSR (Solid State Relay) output version sends a low-voltage signal (typically 0–5V or 3–32V DC) to trigger an external SSR module, enabling faster, silent, and longer-lasting switching — ideal for higher-cycle or precision-critical applications like sous vide or 3D printing. SSR Output Set 3 includes an SSR module bundled with the controller and K-type probe for a complete, ready-to-use solution.\"}}, {\"@type\": \"Question\", \"name\": \"What is a K-type thermocouple and is it included with the REX-C100?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A K-type thermocouple is a widely used temperature sensor made from two dissimilar metal alloys that generate a voltage proportional to temperature. The REX-C100 is designed to accept K-type thermocouple input and can measure temperatures from 0°C to 1300°C. The K-type probe is included in Relay Output Set 2, SSR Output Set 2, and SSR Output Set 3. Sets 1 (Relay and SSR) include the controller unit only, so you would need to source your own probe separately.\"}}, {\"@type\": \"Question\", \"name\": \"How do I install and set up the REX-C100 Digital PID Temperature Controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The REX-C100 uses a standard 1\/16 DIN panel-mount format. Cut a standard panel opening, slide the unit in, and secure it with the provided mounting clips. Connect your thermocouple probe to the input terminals and your heating\/cooling load to the output terminals according to the wiring diagram. Power the unit via AC 100–240V. Use the built-in auto-tuning (AT) function to automatically calculate optimal PID parameters for your load — simply set your target temperature, activate AT mode, and the controller does the rest.\"}}, {\"@type\": \"Question\", \"name\": \"Is the REX-C100 suitable for DIY home projects as well as industrial use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The REX-C100 is popular among both DIY enthusiasts and professionals. Its wide temperature range (0–1300°C), flexible output options, and compact DIN form factor make it suitable for everything from home brewing fermentation chambers and egg incubators to industrial kilns and heat-treatment ovens. 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