{"product_id":"c36s-quad-relay-board-for-cnc-accessory-control","title":"C36S Quad Relay Board for CNC Accessory Control","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #222;\"\u003e\n\n  \u003ch2 style=\"font-size: 24px; margin-bottom: 10px;\"\u003eC36S Quad Relay Board\u003c\/h2\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    The \u003cstrong\u003eC36S Quad Relay Board\u003c\/strong\u003e gives your CNC control system four independent relay outputs for switching machine accessories on and off. It is designed for CNC builders who need to control multiple external devices such as spindle enable circuits, coolant pumps, vacuum systems, dust collectors, solenoid valves, warning lights, or other auxiliary equipment.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    Each relay includes \u003cstrong\u003eNormally Open (NO)\u003c\/strong\u003e and \u003cstrong\u003eNormally Closed (NC)\u003c\/strong\u003e connections, giving you flexible wiring options depending on how your accessory needs to operate. The board also includes RJ45 input connectors, screw terminals, relay status LEDs, and DIN rail mounting for a cleaner control box installation.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background: #f6f6f6; border-left: 4px solid #333; padding: 15px 18px; margin: 22px 0;\"\u003e\n    \u003cstrong\u003eBest for:\u003c\/strong\u003e CNC routers, CNC mills, plasma tables, control cabinets, coolant control, spindle enable circuits, dust collection, solenoid valves, vacuum systems, and other CNC accessories that need relay switching.\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eWhy Choose the C36S?\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControl up to 4 devices:\u003c\/strong\u003e Provides four electromechanical relays for switching multiple CNC accessories from your controller.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNO and NC relay contacts:\u003c\/strong\u003e Each relay includes Normally Open and Normally Closed positions for flexible wiring.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRJ45 input connectors:\u003c\/strong\u003e Allows cleaner input wiring using standard network-style cables with compatible CNC control boards.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScrew terminal outputs:\u003c\/strong\u003e Makes accessory wiring easier, cleaner, and more serviceable.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStatus LEDs on each relay:\u003c\/strong\u003e Lets you quickly see which relay is active, making setup and troubleshooting much easier.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTTL signal compatibility:\u003c\/strong\u003e Designed to work with common +5VDC or +3.3VDC TTL control signals.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDIN rail mountable:\u003c\/strong\u003e Helps create a cleaner and more professional CNC control box layout.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGreat control box add-on:\u003c\/strong\u003e Useful when your machine needs more switched outputs than your main controller or breakout board provides.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eMain Features\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003e4 electromechanical relay outputs\u003c\/li\u003e\n    \u003cli\u003eNormally Open (NO) and Normally Closed (NC) connections on each relay\u003c\/li\u003e\n    \u003cli\u003eRJ45 input connectors for cleaner wiring with compatible boards\u003c\/li\u003e\n    \u003cli\u003eScrew-on terminal connections for relay outputs\u003c\/li\u003e\n    \u003cli\u003eStatus LEDs on relay connections\u003c\/li\u003e\n    \u003cli\u003eCompatible with TTL +5VDC or +3.3VDC control signals\u003c\/li\u003e\n    \u003cli\u003eInterfaces with parallel-port style products and compatible CNC4PC boards\u003c\/li\u003e\n    \u003cli\u003eDIN rail mountable design\u003c\/li\u003e\n    \u003cli\u003eDesigned for CNC control boxes and automation projects\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eCommon Devices It Can Control\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003eSpindle enable or spindle start\/stop circuit\u003c\/li\u003e\n    \u003cli\u003eCoolant pump\u003c\/li\u003e\n    \u003cli\u003eMist coolant system\u003c\/li\u003e\n    \u003cli\u003eVacuum table or vacuum pump trigger\u003c\/li\u003e\n    \u003cli\u003eDust collection relay trigger\u003c\/li\u003e\n    \u003cli\u003eSolenoid or electro valve\u003c\/li\u003e\n    \u003cli\u003eWarning light or stack light\u003c\/li\u003e\n    \u003cli\u003eAir assist or auxiliary machine output\u003c\/li\u003e\n    \u003cli\u003eExternal contactor control\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eRelay Contact Options\u003c\/h3\u003e\n\n  \u003cdiv style=\"overflow-x: auto; margin-bottom: 22px;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eConnection\u003c\/th\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eWhat It Means\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNormally Open (NO)\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eThe circuit is normally off and turns on when the relay activates.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNormally Closed (NC)\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eThe circuit is normally on and turns off when the relay activates.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eCustomer-Friendly Explanation\u003c\/h3\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    The C36S acts like four remote-controlled switches for your CNC machine. Your controller sends low-voltage signals to the board, and the relays switch external devices on or off. This is useful because CNC controllers usually should not power accessories directly.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    Use this board when your CNC machine needs several controlled outputs, such as spindle on\/off, coolant, vacuum, dust collection, and air valves. Instead of adding multiple single relay boards, the C36S gives you four relay channels in one cleaner board.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eCommon Uses\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003eAdding multiple relay outputs to a CNC control box\u003c\/li\u003e\n    \u003cli\u003eSpindle start\/stop or enable wiring\u003c\/li\u003e\n    \u003cli\u003eCoolant and mist control\u003c\/li\u003e\n    \u003cli\u003eVacuum table control\u003c\/li\u003e\n    \u003cli\u003eDust collector trigger circuit\u003c\/li\u003e\n    \u003cli\u003eSolenoid valve control\u003c\/li\u003e\n    \u003cli\u003eExternal contactor control\u003c\/li\u003e\n    \u003cli\u003eGeneral CNC accessory switching\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eOfficial Documentation \u0026amp; Wiring Downloads\u003c\/h3\u003e\n\n  \u003cdiv style=\"background: #f6f6f6; border-left: 4px solid #333; padding: 18px 20px; margin: 22px 0;\"\u003e\n    \u003cp style=\"font-size: 16px; margin: 0 0 16px 0;\"\u003e\n      Review the official C36S documentation before wiring this quad relay board into your CNC control box. These resources help with relay output wiring, MASSO G3 integration, RJ45 input connections, accessory switching, and control cabinet planning.\n    \u003c\/p\u003e\n\n    \u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px;\"\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/User_s_Manual_C36S.pdf?v=1779235267\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#111;color:#fff;text-decoration:none;font-weight:700;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View C36S User Manual\n      \u003c\/a\u003e\n\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/Wiring_Sample_MASSO_G3_with_C36S.pdf?v=1779235328\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#fff;color:#111;text-decoration:none;font-weight:700;border:1px solid #111;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View MASSO G3 with C36S Wiring Sample\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003cp style=\"font-size: 13px; color: #555; margin: 14px 0 0 0;\"\u003e\n      Documentation may include relay wiring, MASSO G3 wiring examples, RJ45 signal information, output connection guidance, and control box installation notes. Always confirm your controller pinout, accessory voltage, current draw, relay rating, and wiring plan before powering the system.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eCompatibility Notes\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003eThis board provides \u003cstrong\u003erelay switching only\u003c\/strong\u003e. It is not a motion controller or motor driver.\u003c\/li\u003e\n    \u003cli\u003eDesigned for compatible TTL +5VDC or +3.3VDC control signals.\u003c\/li\u003e\n    \u003cli\u003eRJ45 input wiring requires compatible pinout and signal support from your controller or breakout board.\u003c\/li\u003e\n    \u003cli\u003eConfirm your accessory voltage, current draw, and wiring requirements before connecting loads.\u003c\/li\u003e\n    \u003cli\u003eFor larger motors, pumps, or high-current devices, use the relay to control a properly rated contactor or external relay.\u003c\/li\u003e\n    \u003cli\u003eElectrical wiring should be performed by someone qualified to work with the voltages involved.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eC36S Relay Board Buying Guidance\u003c\/h3\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    Choose the C36S if your CNC control system needs multiple relay-controlled outputs in one compact board. It is a strong fit for MASSO G3 control boxes, CNC4PC-compatible wiring setups, and CNC machines that need controlled switching for spindle enable, coolant, vacuum, dust collection, air assist, solenoids, or warning lights.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    The C36S is not a motor driver, motion controller, or power supply. It is a relay interface board. Your CNC controller provides the low-voltage control signal, and the C36S relays switch the external accessory circuit. For high-current devices, use the C36S relay to trigger a properly rated contactor or external relay instead of switching the load directly.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background: #fff8e5; border: 1px solid #e0c878; padding: 15px 18px; margin-top: 24px;\"\u003e\n    \u003cstrong\u003eNeed help choosing the right relay board?\u003c\/strong\u003e\n    \u003cp style=\"margin: 8px 0 0 0;\"\u003e\n      If you are not sure whether the C36S is the right relay board for your CNC control box, contact us before ordering. We can help you check your control signal, relay needs, wiring style, and accessory load requirements.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BuildYourCNC","offers":[{"title":"Default Title","offer_id":47832220041390,"sku":null,"price":32.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/C36S_C_C36S-QuadRelay.png?v=1778199544","url":"https:\/\/buildyourcnc.com\/products\/c36s-quad-relay-board-for-cnc-accessory-control","provider":"BuildYourCNC","version":"1.0","type":"link"}