{"product_id":"dvb01-digital-voltage-comparator-module-dc-5v-12v-24v-display","title":"DVB01 Digital Voltage Comparator Module DC 5V 12V 24V Display","description":"\n\u003ch2\u003eDVB01 Digital Display Window Voltage Comparator Module\u003c\/h2\u003e\n\u003cp\u003eTake full control of your voltage monitoring with the \u003cstrong\u003eALLOYSEED DVB01 Digital Voltage Comparator Module\u003c\/strong\u003e. Engineered for hobbyists, engineers, and electronics professionals alike, this compact yet powerful module delivers high-precision voltage measurement, charge\/discharge monitoring, and relay control — all in one easy-to-use package. Whether you're managing battery systems, power supplies, or custom automation circuits, the DVB01 has you covered.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose the DVB01 Voltage Comparator Module?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Precision Measurement:\u003c\/strong\u003e Measures DC voltages from 0–99.9V with an accuracy of ±0.1V, giving you reliable, real-time readings you can trust.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Voltage Range:\u003c\/strong\u003e Compatible with DC 5V, 12V, and 24V working voltages — perfect for a broad range of circuits and applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 Selectable Functions:\u003c\/strong\u003e Choose from voltage measurement, charge monitoring, discharge monitoring, interval suction, or outside-interval relay control to match your exact needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e Ideal for high-frequency signal processing and real-time sensor feedback control applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws less than 3mA in display-off mode, extending battery life and reducing energy costs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Delay Functions:\u003c\/strong\u003e Set 0–99.9 second delayed relay engagement and disengagement for fine-tuned automation control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-Volatile Memory:\u003c\/strong\u003e All user-defined parameters are saved automatically — settings are retained even after a power cycle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Power Saving:\u003c\/strong\u003e Built-in automatic power saving mode that users can configure independently.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eModule Functions at a Glance\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Measurement:\u003c\/strong\u003e Relay remains inactive; digital display shows the live measured voltage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharge Monitoring:\u003c\/strong\u003e Relay engages when voltage drops below the lower limit; disengages when it exceeds the upper limit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDischarge Monitoring:\u003c\/strong\u003e Relay engages when voltage exceeds the upper limit; disengages when it falls below the lower limit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIn-Interval Mode:\u003c\/strong\u003e Relay engages when voltage is between the upper and lower limits; disengages otherwise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOut-of-Interval Mode:\u003c\/strong\u003e Relay engages when voltage is outside the set limits; disengages when within range.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDC 5V \/ 12V \/ 24V (±10% tolerance)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Current (5V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026lt;90mA active; \u0026lt;12mA relay off; \u0026lt;3mA display off\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Current (12V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026lt;50mA active; \u0026lt;12mA relay off; \u0026lt;3mA display off\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Current (24V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026lt;35mA active; \u0026lt;12mA relay off; \u0026lt;3mA display off\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDC 0–99.9V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMeasuring Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e±0.1V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eRelay Load (Normally Open)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDC 0–30V \/ 10A; AC 0–250V \/ 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eRelay Load (Normally Closed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDC 0–28V \/ 10A; AC 0–125V \/ 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eRecommended -20°C to 60°C (limit: -30°C to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eProduct Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e68 × 44 × 17 mm (2.68 × 1.73 × 0.67 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eALLOYSEED\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eModule Interface Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Input (4-wire terminal block):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC+\u003c\/strong\u003e — Positive pole of DC power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC–\u003c\/strong\u003e — Negative pole of DC power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eV+\u003c\/strong\u003e — Measurement voltage positive pole\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eV–\u003c\/strong\u003e — Measurement voltage negative pole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRelay Load Output (3-wire terminal block):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNO\u003c\/strong\u003e — Normally Open relay interface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCOM\u003c\/strong\u003e — Relay common interface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNC\u003c\/strong\u003e — Normally Closed relay interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× DVB01 Digital Voltage Comparator Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Standards Reference\u003c\/h3\u003e\n\u003cp\u003eFor guidance on safe use of electronic components and electrical safety standards in DIY and professional environments, refer to the U.S. Consumer Product Safety Commission – Electrical Safety Resources. Always follow proper electrical safety practices when working with relay modules and live circuits.\u003c\/p\u003e\n\n\u003cp\u003eLooking to expand your electronics toolkit? You may also be interested in our \u003ca href=\"\/products\/22awg-glass-tube-fuse-holder-5x20mm-6x30mm-screw-type-10-pack\"\u003e10-Pack 22AWG Glass Tube Fuse Holder 5x20mm \u0026amp; 6x30mm Screw\u003c\/a\u003e and our \u003ca href=\"\/products\/140w-usb-c-fast-charging-adapter-auto-power-off-overcharge-protection\"\u003e140W USB-C Fast Charger with Auto Power-Off Overcharge Protection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Module\" target=\"_blank\" rel=\"noopener\"\u003eModule\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What working voltages are compatible with the DVB01 digital voltage comparator module?\u003c\/h4\u003e\n\u003cp\u003eA: The DVB01 module supports three working voltages: DC 5V, 12V, and 24V. You can select the appropriate supply voltage for your circuit. Note that the supply voltage should not exceed the rated voltage by more than ±10% to ensure stable and safe operation.\u003c\/p\u003e\n\u003ch4\u003eQ: Can the DVB01 module be used to protect batteries during charging and discharging?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The DVB01 includes dedicated charge monitoring (Function 2) and discharge monitoring (Function 3) modes. You simply set your upper and lower voltage limits, and the relay automatically engages or disengages to protect your battery or power source from overcharge or over-discharge conditions.\u003c\/p\u003e\n\u003ch4\u003eQ: Will my settings be lost if the power is cut?\u003c\/h4\u003e\n\u003cp\u003eA: No. The DVB01 features non-volatile parameter storage, meaning all user-configured settings — including voltage limits, function selection, and delay times — are automatically saved and will be retained even after a power outage or intentional power-down.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum voltage the DVB01 can measure?\u003c\/h4\u003e\n\u003cp\u003eA: The DVB01 has a measurement range of DC 0–99.9V with an accuracy of ±0.1V, making it suitable for a wide variety of battery systems, power supplies, and voltage monitoring applications.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What working voltages are compatible with the DVB01 digital voltage comparator module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The DVB01 module supports three working voltages: DC 5V, 12V, and 24V. You can select the appropriate supply voltage for your circuit. Note that the supply voltage should not exceed the rated voltage by more than ±10% to ensure stable and safe operation.\"}}, {\"@type\": \"Question\", \"name\": \"Can the DVB01 module be used to protect batteries during charging and discharging?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The DVB01 includes dedicated charge monitoring (Function 2) and discharge monitoring (Function 3) modes. You simply set your upper and lower voltage limits, and the relay automatically engages or disengages to protect your battery or power source from overcharge or over-discharge conditions.\"}}, {\"@type\": \"Question\", \"name\": \"Will my settings be lost if the power is cut?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The DVB01 features non-volatile parameter storage, meaning all user-configured settings — including voltage limits, function selection, and delay times — are automatically saved and will be retained even after a power outage or intentional power-down.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum voltage the DVB01 can measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The DVB01 has a measurement range of DC 0–99.9V with an accuracy of ±0.1V, making it suitable for a wide variety of battery systems, power supplies, and voltage monitoring applications.\"}}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"DC5V \/ United States","offer_id":47710866210921,"sku":"14:10#DC5V;200007763:201336106","price":33.7,"currency_code":"USD","in_stock":true},{"title":"DC24V \/ United States","offer_id":47710866243689,"sku":"14:94#DC24V;200007763:201336106","price":33.63,"currency_code":"USD","in_stock":true},{"title":"DC12V \/ United States","offer_id":47710866276457,"sku":"14:29#DC12V;200007763:201336106","price":33.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sbde61d2e466f439984cb546a3b62c8e0z.webp?v=1782061213","url":"https:\/\/oasis-select.com\/products\/dvb01-digital-voltage-comparator-module-dc-5v-12v-24v-display","provider":"Oasis Select","version":"1.0","type":"link"}