Return items will be accepted within 40 days when is the date of receiving the goods. Customized items cannot be returned or exchanged. Items bought with an e-gift card are exchangeable only; refunds are not applicable.
Free Gift
Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.
Shipping Policy
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.
1. Return & Exchange Policy
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side.Final sales items or free gifts are not acceptable for a return.To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier. We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom
color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +447549870296
2.Refund Policy
You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment.Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +447549870296
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Introduction:This voltage and internal resistance tester adopts Kelvin four-wire detection, effectively eliminating the influence of line and contact resistance, realizing high-precise internal resistance and voltage detection. With its professional and accurate test performance, humanized design concept, nice durability, and long endurance, this battery internal resistance tester is a practical partner for battery or powersupply maintenance and troubleshooting, suitable for various battery testing scenarios.Features:【Efficient Voltage & Resistance Measurement】: The TS457 entry-level voltage and resistance tester accurately displays both voltage and internal resistance values, allowing users to conveniently record measured resistance values and delete recorded data as needed, streamlining test workflows.【Fine-Tunable Display Value】: With voltage and resistance display value adjustable functions, the tester allows users to calibrate readings to improve the display accuracy and meet the accuracy requirements of the user.【Display Backlit & Standby Time Management】: Supports standby time adjustment and display backlight adjustment to ensure maximum visibility in various ambient illumination conditions while conserving energy, helping to extend battery lifespan and enhance the user experience.【Versatile Configuration & Reset Functions】: Supporting screen display rotation adjust and factory reset function, the tester offers high flexibility in instrument operation, ensuring adaptability to different user preferences and troubleshooting needs.【Automatic Shutdown Function】: Offering automatic shutdown time setting function, with a default time of 2 minutes, the tester helps conserve battery electricity while ensuring flexibility to adapt to individual user preferences and work scenarios.Specifications:Name: Voltage Internal Resistance Tester Material: plasticsType: tester, tester and Kelvin clip set (optional)Voltage measurement ranges: 0.001V-45.00VInternal resistance measurement ranges: 0.1mΩ-6.99ΩItem size: 79 * 42 * 28mm / 3.11 * 1.65 * 1.10inItem weight:Tester: 40g / 1.41ounceTester and Kelvin clip set: 55g / 1.94ouncePackage size: 155 * 103 * 42mm / 6.10 * 4.06 * 1.65inPackage weight:Tester: 71g / 2.50ounceTester and Kelvin clip set: 87g / 3.07ouncePackage includes(optional):
Type 1:
1 x Voltage Internal Resistance Tester1 x Power Line
1 x 4Pin Cable
Type 2:
1 x Voltage Internal Resistance Tester1 x Power Line
1 x Kelvin Clip
Type 3:
1 x Voltage Internal Resistance Tester1 x Power Line
Roymall C.o.
Free Gift
Shipping Policy
Return Policy
Coupon Code
Direct purchase from the factory 
Electronic Components & Supplies
Module Board
Test & Measuring Module
