Products

Suppliers

Filter Gallery
23,998

Computer Control Resistance Tester

Products

Sorry! No matches were found.

Digital Computer Control Customerized Ball Dynamic Impact Resistance Tester (GW-6007)

Digital Computer Control Customerized Ball Dynamic Impact Resistance Tester (GW-6007)

US $ 5,800-16,800 / Piece FOB
1 Piece (MOQ)
More
Main Products: Environment Testing Machine, Universal Testing Machine, Shoes Testing Machine, Leather Testing Machine, Tensile Testing Machine, Testing Equipment, Aging Testing Machine, Testing Machine, Measuring Machine, Mask Making Instrument
Send Inquiry
GREAT WIN INSTRUMENT CO., LTD.

Guangdong, China Since 2016
Chat Now Send Inquiry
Efficient Voltage Breakdown Resistance Tester for Insulating Material with Computer Control
Secured Trading Service

Efficient Voltage Breakdown Resistance Tester for Insulating Material with Computer Control

US $ 8,500-15,000 / Set FOB
1 Set (MOQ)
More
Warranty : With Warranty
Send Inquiry
Audited Supplier
Changchun Intelligent Instrument Equipment Co.,Ltd.

Manufacturer/Factory & Trading Company

Jilin, China Since 2024
Chat Now Send Inquiry
Computer Control Oxygen Mask Air Leak Detection Machine Lab Medical Mask Respiratory Resistance Tester
Secured Trading Service

Computer Control Oxygen Mask Air Leak Detection Machine Lab Medical Mask Respiratory Resistance Tester

US $ 4,900-8,900 / Piece FOB
1 Piece (MOQ)
More
Main Products: Clinching machine, gas booster system, safety valve test bench
Send Inquiry
Audited Supplier
JINAN ODMT FLUID CONTROL EQUIPMENT CO., LTD.

Manufacturer/Factory & Trading Company

Shandong, China Since 2019
Chat Now Send Inquiry
Der2572 Multi-Function Ground Resistance Tester with Computer Control Interface Soil Resistivity Tester 4-30A Adjustable Earth Resistance Tester
Secured Trading Service

Der2572 Multi-Function Ground Resistance Tester with Computer Control Interface Soil Resistivity Tester 4-30A Adjustable Earth Resistance Tester

US $ 159-196 / Piece FOB
1 Piece (MOQ)
More
Type : Universal Testing Machine
Send Inquiry
Audited Supplier
Wuhan Huadian High-Tech Electrical Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Hubei, China Since 2025
Chat Now Send Inquiry
Computer Control High Quality Favorable Price Lab Medical Mask Respiratory Resistance Tester
Secured Trading Service

Computer Control High Quality Favorable Price Lab Medical Mask Respiratory Resistance Tester

US $ 4,900-8,900 / Piece FOB
1 Piece (MOQ)
More
Main Products: Clinching machine, gas booster system, safety valve test bench
Send Inquiry
Audited Supplier
JINAN ODMT FLUID CONTROL EQUIPMENT CO., LTD.

Manufacturer/Factory & Trading Company

Shandong, China Since 2019
Chat Now Send Inquiry
Computer Control Electronic Film Pendulum Impact Resistance Tester
Secured Trading Service

Computer Control Electronic Film Pendulum Impact Resistance Tester

US $ 299-2,999 / Piece FOB
1 Piece (MOQ)
Send Inquiry
Audited Supplier
Dongguan Youbi Test Equipment Co.,Ltd

Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Intelligent Advanced Portable on-Site High Voltage High Voltage Insulation Resistance Tester Megger Test Instruments Best Technology Digital Megohmmeter Factory
Secured Trading Service

Intelligent Advanced Portable on-Site High Voltage High Voltage Insulation Resistance Tester Megger Test Instruments Best Technology Digital Megohmmeter Factory

US $ 680 / Piece FOB
1 Piece (MOQ)
More
Main Products: Hipot Tester, Transformer Tester, Transformer Oil Test, CT PT Analyzer, Cable Tester, Partial Discharge Tester, Contact Resistance Tester, Circuit Breaker Tester, Hv Surge Counter Tester
Send Inquiry
Audited Supplier
Refine On (Hebei) Electric Power Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Hebei, China Since 2025
Chat Now Send Inquiry
Supply of High-Precision Resistance Testers Professional Digital Clamp-on Ground Resistance Tester with High Precision Features and Stable Performance
Secured Trading Service

Supply of High-Precision Resistance Testers Professional Digital Clamp-on Ground Resistance Tester with High Precision Features and Stable Performance

US $ 392 / Piece FOB
1 Piece (MOQ)
More
Control : Computer Control
Send Inquiry
Audited Supplier
Refine On (Hebei) Electric Power Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Hebei, China Since 2025
Chat Now Send Inquiry
Advanced Slip Resistance Tester for Footwear Safety Assessment
Secured Trading Service

Advanced Slip Resistance Tester for Footwear Safety Assessment

US $ 14,500-21,500 / Set FOB
1 Set (MOQ)
More
Main Products: Textile Testing Equipment, Footwear Testing Equipment, Furniture Testing Equipment, Paper and Packaging Testing Equipment.
Send Inquiry
Audited Supplier
Quanzhou Gester Instruments Co., Ltd.

Manufacturer/Factory & Trading Company

Fujian, China Since 2010
Chat Now Send Inquiry
Hz-5K Hertz 5000V Megger 10kv Capacity Insulation Resistance Tester with Pi and Dar
Secured Trading Service

Hz-5K Hertz 5000V Megger 10kv Capacity Insulation Resistance Tester with Pi and Dar

US $ 1,999-2,999 / Piece FOB
1 Piece (MOQ)
More
Customized : Customized
Send Inquiry
Audited Supplier
Wuhan Hertz Power Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Hubei, China Since 2024
Chat Now Send Inquiry
50A 100A Transformer DC Winding Resistance Tester
Secured Trading Service

50A 100A Transformer DC Winding Resistance Tester

US $ 1,290-4,980 / Set FOB
1 Set (MOQ)
More
Main Products: Transformer Test Equipment, Circuit Breaker Testing Equipment, High Voltage Test System, CT PT Testing and Calibrating, High Voltage Insulation Testing, DC System and Battery Testing, Cable Faults, Test and Diagnostics, Arrester and Insulator Testing
Send Inquiry
Audited Supplier
EP HIPOT ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Hubei, China Since 2019
Chat Now Send Inquiry
Carton Resistance Pressure Testing Factory Price Carton Compression Tester

Carton Resistance Pressure Testing Factory Price Carton Compression Tester

US $ 3,000-8,000 / Sets FOB
1 Set (MOQ)
More
Control : Computer Control
Send Inquiry
Audited Supplier
Jinan Saicheng Electronic Technology Co., Ltd.

Shandong, China Since 2025
Chat Now Send Inquiry
Related Searches
Test Machine Other Test Instrument Environmental Test Chamber Battery Tester Resistance Meter Signal Generator
Tensile Testing Machine Compression Testing Machine Bend Testing Machine Shear Testing Machine Torsion Testing Machine Fatigue Testing Machine
Djy-625A Insulation Resistance Tester High Resistance Meter Digital Megohmmeters Advanced
Secured Trading Service

Djy-625A Insulation Resistance Tester High Resistance Meter Digital Megohmmeters Advanced

US $ 800-1,500 / Set FOB
1 Set (MOQ)
More
Main Products: Power Transformer, Dry Type Transformer, Oil Immersed Transformer, High Voltage Electrict Testing Equipment, Transformer Testing Equipment, High Voltage Testing Transformer, HVAC Resonant System, Lighting Impulse High Voltage Generator, Power Frequency High Voltage Withstand System, Pd Partial Discharge Test System
Send Inquiry
Audited Supplier
Shanghai Demiks Electric Power Technology Co., Ltd.

Shanghai, China Since 2025
Chat Now Send Inquiry
Reliable Pw Series Tester for Evaluating Door and Window Strength

Reliable Pw Series Tester for Evaluating Door and Window Strength

US $ 30,000-70,000 / Set FOB
1 Set (MOQ)
More
Load Way : Mechanical Load
Send Inquiry
Audited Supplier
Jinan Victory Instrument Co., Ltd.

Shandong, China Since 2025
Chat Now Send Inquiry
Insulation Resistance Tester for Water Cooled Generator 5kv Digital Insulation Resistance Tester Water Cooling Generator Insulation Resistance Tester
Secured Trading Service

Insulation Resistance Tester for Water Cooled Generator 5kv Digital Insulation Resistance Tester Water Cooling Generator Insulation Resistance Tester

US $ 1,000-4,233 / Piece FOB
1 Piece (MOQ)
More
Main Products: Series Resonance Test System, Circuit Breaker Test Equipment, Transformer Test Equipment, High-Voltage Test Instrument, Relay Protection Test Device, Cable Testing Equipment‌
Send Inquiry
Audited Supplier
Wuhan Huadian High-Tech Electrical Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Hubei, China Since 2025
Chat Now Send Inquiry
Ots Technik ASTM D 8380-21 Intelligent Control Electronics Coating Wear Resistance Tester
Secured Trading Service

Ots Technik ASTM D 8380-21 Intelligent Control Electronics Coating Wear Resistance Tester

US $ 3,999-9,999 / Piece FOB
1 Piece (MOQ)
More
Load Way : Electronic Load
Send Inquiry
Audited Supplier
Dongguan Xin Bao Instrument Co.,Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2012
Chat Now Send Inquiry
Enhanced Accuracy Dynamic Wheel Tracking Performance Examination Instrument Asphalt Pavement Rutting Resistance Tester
Secured Trading Service

Enhanced Accuracy Dynamic Wheel Tracking Performance Examination Instrument Asphalt Pavement Rutting Resistance Tester

US $ 3,950-4,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Experimental Instruments, Testing Instrument
Send Inquiry
Audited Supplier
Xianxian Zhonglu Tongda Testing Instrument and Equipment Factory

Trading Company

Hebei, China Since 2025
Chat Now Send Inquiry
Micro Computer Paper Tube Compression Resistance Tester

Micro Computer Paper Tube Compression Resistance Tester

US $ 2,800-4,500 / Piece FOB
1 Piece (MOQ)
More
Loading Method : Dynamic Load
Send Inquiry
Audited Supplier
Dongguan Zhongli Instrument Technology Co., Ltd

Guangdong, China Since 2025
Chat Now Send Inquiry
High Accuracy Circuit Breaker Tester for Testing Micro Ohm Contact Resistance and Testing Speed of Closing and Opening.
Secured Trading Service

High Accuracy Circuit Breaker Tester for Testing Micro Ohm Contact Resistance and Testing Speed of Closing and Opening.

US $ 1,500-2,800 / Piece FOB
1 Piece (MOQ)
More
Main Products: AC Resonant Test System, AC/DC Hipot Tester, Circuit Breaker Analyzer, Hv Test Set, Power Frequency Hipot Tester, Transformer Tester, AC Dielectric Test Set, Partial Discharge Test Set, High Voltage Test Set, Primary Current Injection Test Set
Send Inquiry
Audited Supplier
Wuhan Goldhome Hipot Electrical Co., Ltd.

Hubei, China Since 2018
Chat Now Send Inquiry
B-Type Pendulum Impact Tester – Composite Material Impact Resistance Testing with ISO 179 Compliance

B-Type Pendulum Impact Tester – Composite Material Impact Resistance Testing with ISO 179 Compliance

US $ 3,000-5,000 / Piece FOB
1 Piece (MOQ)
More
Accuracy Grade : 0.5
Send Inquiry
Audited Supplier
Qingdao Chengyu Testing Equipment Co., Ltd

Manufacturer/Factory & Trading Company

Shandong, China Since 2024
Chat Now Send Inquiry
Related Videos
  • What is Efficient Voltage Breakdown Resistance Tester for Insulating Material with Computer Control
    What is Efficient Voltage Breakdown Resistance Tester for Insulating Material with Computer Control
    US $ 8,500-15,000 /Set
    1 Set (MOQ)
    Send Inquiry
  • What is Computer Control Oxygen Mask Air Leak Detection Machine Lab Medical Mask Respiratory Resistance Tester
    What is Computer Control Oxygen Mask Air Leak Detection Machine Lab Medical Mask Respiratory Resistance Tester
    US $ 4,900-8,900 /Piece
    1 Piece (MOQ)
    Send Inquiry
  • What is Der2572 Multi-Function Ground Resistance Tester with Computer Control Interface Soil Resistivity Tester 4-30A Adjustable Earth Resistance Tester
    What is Der2572 Multi-Function Ground Resistance Tester with Computer Control Interface Soil Resistivity Tester 4-30A Adjustable Earth Resistance Tester
    US $ 159-196 /Piece
    1 Piece (MOQ)
    Send Inquiry
  • What is Computer Control High Quality Favorable Price Lab Medical Mask Respiratory Resistance Tester
    What is Computer Control High Quality Favorable Price Lab Medical Mask Respiratory Resistance Tester
    US $ 4,900-8,900 /Piece
    1 Piece (MOQ)
    Send Inquiry
Foam Tear Resistance Tensile Strength Tester
Secured Trading Service

Foam Tear Resistance Tensile Strength Tester

US $ 3,000-5,000 / Set FOB
1 Set (MOQ)
More
Main Products: Testing Machine, Testing Equipment, Test Chamber, Universal Testing Machine, Package Testing Machine, Temperature Humidity Test Chamber, Climatic Chamber, Furniture Testing Machine, Tensile Testing Machine, Box Testing Machine
Send Inquiry
Audited Supplier
Guangdong Haida Equipment Co., Ltd.

Guangdong, China Since 2011
Chat Now Send Inquiry
Loop Resistance Tester with 100A Micro Ohm Measurement Capability
Secured Trading Service

Loop Resistance Tester with 100A Micro Ohm Measurement Capability

US $ 650-1,485 / Piece FOB
1 Piece (MOQ)
Send Inquiry
Audited Supplier
Hebei Dual Canopy Mechanic Electrical Engineering Co., Ltd.

Manufacturer/Factory & Trading Company

Hebei, China Since 2026
Chat Now Send Inquiry
Electric Dough Stretch Testerlaboratory Flour Gluten Strength Tester
Secured Trading Service

Electric Dough Stretch Testerlaboratory Flour Gluten Strength Tester

US $ 16,200 / Piece FOB
1 Piece (MOQ)
More
Main Products: Gas Detector, Water Quality Tester
Send Inquiry
Audited Supplier
Qingdao Lubo Environmental Protection Group Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2026
Chat Now Send Inquiry

Not exactly what you want?

Post Sourcing Request

About Computer Control Resistance Tester FAQ
  • QWho are the top distributors of test machines offering bulk or cheap deals?

    The Computer Control Resistance Tester is a premium choice in the Test Machine category.Leading distributors focus on factory-direct and bulk test machine deals, often ideal for industrial OEM use. Check for trends in wholesale packages and distributor guarantees on upgrades. Inquire now for a price guide or to request bulk order information.

  • QCan I request customized test machines at factory prices for my industry needs?

    The Computer Control Resistance Tester is classified under our comprehensive Test Machine range.Absolutely—many factories offer custom test machine options tailored to your sector’s requirements. Popular OEM features and recent industry trends explain price, delivery time, and distributor flexibility. Contact us to start customization and get competitive pricing.

  • QWhat affects the wholesale price of a test machine from a factory?

    The Computer Control Resistance Tester is included in our comprehensive Test Machine range.Test machine price depends on measurement range, digital interface, and OEM customization. Trends show distributor volume discounts and factory prices change with technology updates. Check for special OEM or custom requests when getting a wholesale quote today.

Dry Solid Insulating Materials Resistance Tester of ASTM D495 Testing Equipment
Secured Trading Service

Dry Solid Insulating Materials Resistance Tester of ASTM D495 Testing Equipment

US $ 14,900-15,000 / Piece FOB
1 Piece (MOQ)
More
Power Source : AC220V
Send Inquiry
Audited Supplier
Guangzhou Zhilitong Electromechanical Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
Ots Technik Coating Mar Resistance Tester
Secured Trading Service

Ots Technik Coating Mar Resistance Tester

US $ 3,999-9,999 / Piece FOB
1 Piece (MOQ)
More
Main Products: Testing Machine, Test Chamber, Tensile Testing Machine, Climatic Chamber, Vibration Test Machine, Salt Spray Chamber, UV Aging Test Chamber, Dust Chamber, Drying Oven, Testing Equipment
Send Inquiry
Audited Supplier
Dongguan Xin Bao Instrument Co.,Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2012
Chat Now Send Inquiry
2500V/5000V/10000V LCD Display Water Internal Cooling Generator Insulation Resistance Tester
Secured Trading Service

2500V/5000V/10000V LCD Display Water Internal Cooling Generator Insulation Resistance Tester

US $ 600-1,300 / Set FOB
1 Set (MOQ)
More
Control : Computer Control
Send Inquiry
Audited Supplier
Wuhan Goldhome Hipot Electrical Co., Ltd.

Hubei, China Since 2018
Chat Now Send Inquiry
Golley Method Schober Method Air Permeability Tester Gurley Air Resistance Test Apparatus Film Paper Test Equipment

Golley Method Schober Method Air Permeability Tester Gurley Air Resistance Test Apparatus Film Paper Test Equipment

US $ 2,000-90,000 / Set FOB
1 Set (MOQ)
More
Main Products: Test instruments
Send Inquiry
Audited Supplier
Paratronix Instruments Co., Ltd

Manufacturer/Factory & Trading Company

Shandong, China Since 2024
Chat Now Send Inquiry
UL1581 ASTM D5025 Standard Wire and Cable Combustion Tester for Flammability Resistance Test
Secured Trading Service

UL1581 ASTM D5025 Standard Wire and Cable Combustion Tester for Flammability Resistance Test

US $ 5,000-7,500 / Piece FOB
1 Piece (MOQ)
More
Control : Computer Control
Send Inquiry
Audited Supplier
Dongguan Zhongli Instrument Technology Co., Ltd

Guangdong, China Since 2025
Chat Now Send Inquiry
HD-Shoe Slip Resistance Tester/ Footwear Sole Friction Test Laboratory Equipment
Secured Trading Service

HD-Shoe Slip Resistance Tester/ Footwear Sole Friction Test Laboratory Equipment

US $ 3,000-7,500 / Piece FOB
1 Piece (MOQ)
More
Main Products: Testing Machine, Testing Equipment, Test Chamber, Universal Testing Machine, Package Testing Machine, Temperature Humidity Test Chamber, Climatic Chamber, Furniture Testing Machine, Tensile Testing Machine, Box Testing Machine
Send Inquiry
Audited Supplier
Guangdong Haida Equipment Co., Ltd.

Guangdong, China Since 2011
Chat Now Send Inquiry
Intelligent Constant-Load Rutting Behavior Performance Assessment Machine Asphalt Pavement Rutting Resistance Tester
Secured Trading Service

Intelligent Constant-Load Rutting Behavior Performance Assessment Machine Asphalt Pavement Rutting Resistance Tester

US $ 3,950-4,000 / Piece FOB
1 Piece (MOQ)
More
Control : Computer Control
Send Inquiry
Audited Supplier
Xianxian Zhonglu Tongda Testing Instrument and Equipment Factory

Trading Company

Hebei, China Since 2025
Chat Now Send Inquiry
Winding DC Resistance Tester for Transformer

Winding DC Resistance Tester for Transformer

US $ 1,500-6,000 / Set FOB
1 Set (MOQ)
More
Main Products: AC DC Hipot Test Set, AC Resonant Test System, Transformer Test Set, Hv Switchgear Test Set, Ground Resistance Tester, Cable Fault Locating Test System, Insulator Fault Detector, CT PT Analyzer, Relay
Send Inquiry
Audited Supplier
Sansion Power Electric Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2015
Chat Now Send Inquiry
Rubber Rolling Wear Universal Test Machine/Lubricant Oil Abrasion Resistance Tester Friction Wear Tester

Rubber Rolling Wear Universal Test Machine/Lubricant Oil Abrasion Resistance Tester Friction Wear Tester

US $ 2,000-3,000 / Set FOB
1 Set (MOQ)
More
Weight : >2000Kg
Send Inquiry
Hualong Test Co., Ltd.

Shanghai, China Since 2024
Chat Now Send Inquiry
Hy-8760 Torsion Tester Rubber Low Temperature Resistance Tester
Secured Trading Service

Hy-8760 Torsion Tester Rubber Low Temperature Resistance Tester

US $ 1,000-2,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Universal Testing Equipment, Testing Equipment, Laboratory Equipment, Climatic Chamber, Temperature Controller, Environmental Chamber, Battery Tester, Tensile Testing, Humidity Chamber, Testing Machine
Send Inquiry
Audited Supplier
Dongguan Nanxus Information Technology Co., Ltd

Guangdong, China Since 2023
Chat Now Send Inquiry
Hot Sale Abrasion Resistance Tester with CE Approved for Lab Equipment
Secured Trading Service

Hot Sale Abrasion Resistance Tester with CE Approved for Lab Equipment

US $ 6,600-7,000 / Piece FOB
1 Piece (MOQ)
More
Mass Scope of Workpiece : <900kg
Send Inquiry
Audited Supplier
PW INSTRUMENTS (GUANGDONG) CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2011
Chat Now Send Inquiry
Portable Handheld Automatic Loop Contact Resistance Tester for High Voltage Switch

Portable Handheld Automatic Loop Contact Resistance Tester for High Voltage Switch

US $ 999-1,490 / Piece FOB
1 Piece (MOQ)
More
Main Products: Tan Delta Teser, VLF Hipot Test System, DC Hipot Tester, Insulation Resistance Tester, Surge Arrester Leakage Current Analyzer
Send Inquiry
Audited Supplier
Jinan Hengfeng Electrical Technology Co., Ltd

Manufacturer/Factory & Trading Company

Shandong, China Since 2021
Chat Now Send Inquiry
Universal Tester with Temperature Chamber for Plastic Tensile Resistance & Strength Test
Secured Trading Service

Universal Tester with Temperature Chamber for Plastic Tensile Resistance & Strength Test

US $ 2,199-8,999 / Set FOB
1 Set (MOQ)
More
Display : Digital
Send Inquiry
Audited Supplier
Jinan Nake Test Equipment Co., Ltd.

Shandong, China Since 2025
Chat Now Send Inquiry
View More

Browse by Categories

Home > Instruments & Meters > Test Instrument > Test Machine > Tensile Testing Machine
1/667
TOP

Search Filter

Categories

More Less
  • Test Machine
  • Other Test Instrument
  • Environmental Test Chamber
  • Battery Tester
  • Resistance Meter
  • Signal Generator
  • Component Tester
  • Cable Tester
  • Other Instruments & Meters
  • Specialized Electrical Equipment

Accuracy Grade

More Less
  • 0.5
  • 1

Mass Scope of Workpiece

More Less
  • <900kg
  • 2000kg
  • 900kg
  • 1000kg
  • >20000kg
  • 10000kg
  • 3000kg
  • 20000kg
  • 5000kg
  • 8000kg
  • 6000kg
  • 7000kg
  • 4000kg

Oil Cylinder Position

More Less
  • Under
  • Top

Power Source

More Less
  • AC220V
  • AC380V
  • AC110V

Weight

More Less
  • 0-100Kg
  • 100-500Kg
  • 500-1000Kg
  • 1000-2000Kg
  • >2000Kg

Company Type

More Less
  • Trading Company
  • Manufacturer/Factory
  • Group Corporation
  • Other

Company Location

More Less
  • Guangdong
  • Hubei
  • Shandong
  • Hebei
  • Zhejiang
  • Jiangsu
  • Chongqing
  • Fujian
  • Hunan
  • Shanghai
  • Anhui
  • Shaanxi
  • Jilin
  • Beijing
  • Tianjin
  • Henan
  • Shanxi
  • Jiangxi
  • Sichuan
  • Liaoning
  • Guangxi
Reset Done