{"product_id":"brushless-electric-wrench-drive-control-board-switch-2106-161-169","title":"Brushless Wrench Drive Control Board – Dayi 2106\/161\/169","description":"\n\u003ch2\u003eBrushless Electric Wrench Drive Control Board \u0026amp; Switch\u003c\/h2\u003e\n\u003cp\u003eKeep your brushless electric wrench running at peak performance with this direct-fit drive control board and switch. Precision-engineered for Dayi 2106, 161, and 169 brushless electric wrenches, each unit is tested before shipping to ensure reliable, out-of-the-box functionality.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Designed specifically for Dayi 2106, 161, and 169 brushless electric wrench models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Brushless Sensorless Design:\u003c\/strong\u003e Works as a general control board for 18V–21V brushless angle grinders, drive plates, and polishing machines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Voltage:\u003c\/strong\u003e 18V (5-cell lithium string, fully charged to 21V), 300W rated power.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Battery Compatibility:\u003c\/strong\u003e Compatible with battery packs labelled 48V, 68V, 88V, 98V, or 128VF\/TV — these are all 18V actual voltage (5S2P \/ 5S3P lithium configurations, fully charged 21V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Board Size:\u003c\/strong\u003e 5.2 × 6.2 cm — easy to fit into standard tool housings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-Sale Tested:\u003c\/strong\u003e Every board is tested and verified functional before dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Installation Instructions\u003c\/h3\u003e\n\u003cp\u003eTo protect your control board and ensure correct operation, please follow these steps in order before powering on:\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003eConnect all wiring harnesses securely.\u003c\/li\u003e\n  \u003cli\u003eFix the motor in place within the tool housing.\u003c\/li\u003e\n  \u003cli\u003eInstall the outer casing and tighten all screws.\u003c\/li\u003e\n  \u003cli\u003eVerify that the square output shaft rotates freely without any binding or jamming.\u003c\/li\u003e\n  \u003cli\u003eConnect the power supply.\u003c\/li\u003e\n  \u003cli\u003ePress the speed-control switch to start.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Skipping these steps may trigger a buzzing alarm or cause damage to the control board. Always follow the correct assembly sequence.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDayi 2106 \/ 161 \/ 169 Brushless Electric Wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18V (fully charged 21V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.2 × 6.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrushless, Sensorless\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Drive Control Board \u003cstrong\u003eOR\u003c\/strong\u003e 1 × Speed-Control Switch (please select your required variant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which brushless electric wrench models is this control board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This drive control board is designed specifically for Dayi 2106, 161, and 169 brushless electric wrench models. It also functions as a general-purpose brushless sensorless control board for 18V–21V brushless angle grinders and polishing machines with similar power ratings.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What battery voltage does this brushless drive control board support?\u003c\/h4\u003e\n\u003cp\u003eA: The board operates at 18V nominal (5-cell lithium series, fully charged to 21V), at 300W. Battery packs labelled 48V, 68V, 88V, 98V, 128VF, or TV are all compatible — their actual output is 18V using 5S2P or 5S3P lithium cell configurations.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What happens if I power on the control board before completing the full assembly?\u003c\/h4\u003e\n\u003cp\u003eA: Powering on the board before all wiring is connected, the motor is fixed, the case is assembled, and the shaft spins freely may trigger a buzzing alarm and could potentially damage the control board. Always complete the full assembly sequence before applying power.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which brushless electric wrench models is this control board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This drive control board is designed specifically for Dayi 2106, 161, and 169 brushless electric wrench models. It also functions as a general-purpose brushless sensorless control board for 18V–21V brushless angle grinders and polishing machines with similar power ratings.\"}}, {\"@type\": \"Question\", \"name\": \"What battery voltage does this brushless drive control board support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board operates at 18V nominal (5-cell lithium series, fully charged to 21V), at 300W. 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