{"product_id":"ct-tdr-512-trigger-delay-relay-module-delay-off-timer-switch-dc-5v-12v-10a-spdt","title":"CT-TDR-512 Trigger Delay Relay Module – Adjustable Delay-Off Timer 0.1s–1hr, Optocoupler Isolated, DC 5V\/12V, 10A SPDT","description":"\u003cdiv style=\"font-family: inherit; color: #1a1a2e;\"\u003e\n\u003cp\u003e\u003cstrong style=\"color:#0A2240;\"\u003eThe CT-TDR-512 is a compact trigger-activated delay relay module\u003c\/strong\u003e that converts a momentary signal from any normally-open (NO) switch or sensor into a timed relay output. Trigger it with push buttons, touch switches, micro switches, reed switches, or vibration sensors — the onboard 10A SPDT relay holds the load for the set delay period, then releases automatically.\u003c\/p\u003e\n\n\u003cp\u003eBuilt for machine and automation equipment retrofits, PLC industrial control, vibration alarm circuits, robotics, and smart product integration. A trigger pulse of just 1ms is sufficient to activate the timing cycle, and the module draws under 5mA at idle.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#0A2240; border-bottom:2px solid #E86A1D; padding-bottom:6px;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptocoupler-isolated trigger input\u003c\/strong\u003e for strong anti-interference performance in electrically noisy industrial environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision timing chip\u003c\/strong\u003e for accurate, repeatable delay control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 selectable time ranges\u003c\/strong\u003e from 0.1 seconds up to 1 hour via jumpers, with potentiometer fine adjustment (clockwise = longer delay)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100,000-cycle relay lifespan\u003c\/strong\u003e at maximum rated power\u003c\/li\u003e\n\u003cli\u003eOnboard PWR and TIME indicator LEDs for at-a-glance status\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color:#0A2240; border-bottom:2px solid #E86A1D; padding-bottom:6px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eCT-TDR-512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eDC 5V \/ 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eStatic (Quiescent) Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e4.8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eMax Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e70 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eTrigger Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eNormally-open (NO) dry contact or sensor; pulse ≥ 1 ms; optocoupler-isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eRelay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eSRD-series SPDT, 10A @ 250VAC \/ 10A @ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eRelay Lifespan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e100,000 cycles at maximum rated power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eDelay Time Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e0.1 s – 1 hour, 8 jumper-selectable ranges with potentiometer fine adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eBoard Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e76.0 × 29.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; background:#f4f6f9;\"\u003e\u003cstrong\u003eHS Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e8536.41.0050\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color:#0A2240; border-bottom:2px solid #E86A1D; padding-bottom:6px;\"\u003eDelay Time Range Selection\u003c\/h3\u003e\n\u003cp\u003eSet jumpers S1 and S2 to select the base range, add jumper S4 to multiply into the extended range, then fine-tune within the range using the onboard potentiometer (TIME-ADJ). Clockwise adjustment increases delay time:\u003c\/p\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr style=\"background:#0A2240; color:#ffffff;\"\u003e\n\u003cth style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eS1\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eS2\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eWithout S4\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003eWith S4 Inserted\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e0\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e0.13 s – 1.3 s\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e1.5 s – 14.5 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e0\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e0.5 s – 5.2 s\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e6 s – 58 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e0\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e0\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e4.4 s – 42 s\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e48 s – 463 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3; text-align:center;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e38 s – 340 s\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #d9dce3;\"\u003e389 s – 3,700 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp style=\"font-size:0.9em; color:#555;\"\u003e\u003cem\u003eEngineering note: for maximum service life, derate contact loading to approximately 50% of the rated capacity in continuous-duty applications.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3 style=\"color:#0A2240; border-bottom:2px solid #E86A1D; padding-bottom:6px;\"\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMachine and automation equipment modification\u003c\/li\u003e\n\u003cli\u003ePLC industrial control circuits\u003c\/li\u003e\n\u003cli\u003eVibration alarm sensing devices (pair with a NO vibration sensor)\u003c\/li\u003e\n\u003cli\u003eRobotics and intelligent product integration\u003c\/li\u003e\n\u003cli\u003eTimed lighting, fan, pump, and solenoid control from a momentary button\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color:#0A2240; border-bottom:2px solid #E86A1D; padding-bottom:6px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I set the delay time?\u003c\/strong\u003e\u003cbr\u003eSelect a base range with jumpers S1 and S2, insert jumper S4 for the extended multiplier range, then dial in the exact delay with the TIME-ADJ potentiometer — clockwise increases the delay. The 8 ranges span 0.1 seconds up to 1 hour.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the trigger input isolated?\u003c\/strong\u003e\u003cbr\u003eYes. The trigger circuit is optocoupler-isolated from the timing and relay stages, giving strong anti-interference performance in industrial environments with motors, contactors, or long trigger wire runs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat kind of switches can trigger this module?\u003c\/strong\u003e\u003cbr\u003eAny normally-open, self-resetting switch or sensor: push buttons, touch switches, micro switches, reed switches, and vibration sensors. A pulse of 1 ms or longer starts the timing cycle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it switch AC loads?\u003c\/strong\u003e\u003cbr\u003eYes. The onboard relay is rated 10A at 250VAC and 10A at 30VDC. For continuous-duty loads, we recommend derating to about 50% of rated capacity to extend relay life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work on both 5V and 12V systems?\u003c\/strong\u003e\u003cbr\u003eYes — the module supports DC 5V\/12V supply. Verify your supply matches the marked input before wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this suitable for PLC interfacing?\u003c\/strong\u003e\u003cbr\u003eYes. Its low trigger threshold, optocoupler-isolated input, and dry-contact relay output make it a common choice for PLC input conditioning and output expansion in industrial control panels.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Conversions Tech","offers":[{"title":"Default Title","offer_id":48204929466420,"sku":"CT-TDR-512","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0291\/8445\/8804\/files\/ct-tdr-512-trigger-delay-relay-module-adjustable-delay-off-timer-0-1s-1hr-optocoupler-isolated-dc-5v-12v-10a-spdt-1254755895.jpg?v=1787081963","url":"https:\/\/conversionstech.com\/products\/ct-tdr-512-trigger-delay-relay-module-delay-off-timer-switch-dc-5v-12v-10a-spdt","provider":"Conversions Tech","version":"1.0","type":"link"}