{"product_id":"mini-servo-tester-sg90-mg90s-sg92r-4-8-6v-3-mode-standalone","title":"Mini Servo Tester — SG90, MG90S, SG92R, 4.8–6V, 3-Mode, No Arduino Needed","description":"\u003ch2\u003eMini Servo Tester — SG90, MG90S, SG92R, 4.8–6V, 3-Mode Standalone\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003emini servo tester\u003c\/strong\u003e lets you test and center servos without an Arduino, RC receiver, or any programming. Simply connect a servo, apply \u003cstrong\u003e4.8–6V power\u003c\/strong\u003e, and use the knob and mode button to control the servo position. Three operating modes cover all common servo testing needs — from manual position control to automatic sweep and neutral centering. Essential for servo setup, troubleshooting, and robot arm calibration.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Servos\u003c\/td\u003e\n\u003ctd\u003eSG90, MG90S, SG92R, and most standard 3-wire servos\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.8V – 6V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Modes\u003c\/td\u003e\n\u003ctd\u003e3 (Manual \/ Auto Sweep \/ Neutral)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePWM Output\u003c\/td\u003e\n\u003ctd\u003eStandard servo PWM (1–2ms pulse, 50Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eServo Channels\u003c\/td\u003e\n\u003ctd\u003e1 (3-pin connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003e3 Operating Modes\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMode\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eUse Case\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManual\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKnob controls servo position\u003c\/td\u003e\n\u003ctd\u003eSet specific angle, test range of motion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Sweep\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eServo sweeps full range automatically\u003c\/td\u003e\n\u003ctd\u003eCheck servo travel, identify binding or stalling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeutral\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eServo moves to center (90°)\u003c\/td\u003e\n\u003ctd\u003eCenter servo before installing horn or linkage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose This Servo Tester?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Arduino or programming needed\u003c\/strong\u003e — standalone operation with power and servo only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 test modes\u003c\/strong\u003e — covers manual positioning, sweep testing, and neutral centering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with all standard servos\u003c\/strong\u003e — SG90, MG90S, SG92R, and any 3-wire PWM servo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.8–6V supply\u003c\/strong\u003e — power directly from 4×AA batteries or a 5V USB power bank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact size\u003c\/strong\u003e — fits in a toolbox for field use at RC events and workshops\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eServo setup \u0026amp; centering\u003c\/strong\u003e — center servo before installing control horn and linkage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobot arm calibration\u003c\/strong\u003e — set each joint servo to known position before assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRC vehicle \u0026amp; aircraft testing\u003c\/strong\u003e — verify servo travel and direction without transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServo troubleshooting\u003c\/strong\u003e — identify faulty servos by testing independently\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassroom \u0026amp; workshop demos\u003c\/strong\u003e — demonstrate servo operation without microcontroller setup\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With\u003c\/h3\u003e\u003cp\u003eWorks with all standard \u003cstrong\u003e3-wire PWM servos\u003c\/strong\u003e including SG90, SG92R, MG90S, MG996R, DS3218, and most hobby-grade servos. Also compatible with digital servos that accept standard 50Hz PWM signals. \u003cstrong\u003eNot compatible\u003c\/strong\u003e with continuous rotation servos in manual mode (they will spin rather than position).\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I power this tester from a USB power bank?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A 5V USB power bank works perfectly. Use a USB to bare wire cable or a USB breakout board to connect 5V and GND to the tester.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it work with MG996R high-torque servos?\u003c\/strong\u003e\u003cbr\u003eA: Yes, as long as your power supply can deliver sufficient current. MG996R draws up to 2.5A under load — use a dedicated 6V power supply rather than a small battery pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I switch between modes?\u003c\/strong\u003e\u003cbr\u003eA: Press the mode button to cycle through Manual → Auto Sweep → Neutral modes. The LED indicator changes to show the current mode.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× Mini Servo Tester\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"SG90 1set","offer_id":46991474753771,"sku":"14:94#SG90 1set","price":6.16,"currency_code":"USD","in_stock":true},{"title":"MG90S 1set","offer_id":46991474786539,"sku":"14:173#MG90S 1set","price":7.0,"currency_code":"USD","in_stock":true},{"title":"SG90","offer_id":46991474819307,"sku":"14:10#SG90","price":5.32,"currency_code":"USD","in_stock":true},{"title":"MG90S","offer_id":46991474852075,"sku":"14:29#MG90S","price":5.96,"currency_code":"USD","in_stock":true},{"title":"Bracket","offer_id":46991474884843,"sku":"14:175#Bracket","price":2.96,"currency_code":"USD","in_stock":true},{"title":"SG92R","offer_id":46991474917611,"sku":"14:193#SG92R","price":6.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/rc-mini-micro-servo-tester-sg90-mg90s-sg92r-arduino.webp?v=1761631151","url":"https:\/\/keszoox.com\/products\/mini-servo-tester-sg90-mg90s-sg92r-4-8-6v-3-mode-standalone","provider":"Keszoox","version":"1.0","type":"link"}