Are these rewritable?

Yes they are. I’ve ordered them many times

I have an on off security ibutton reader in my car. I lost the ibutton key will these work or be read by the reader so I can start my car?

I had the same exact issue, and in my case they worked straight out the box. Lost mine and couldn’t start my car, these ibuttons worked so I’m good to go!

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Description

🔑 Unlock elite security with zero compromise.

POWER FREE CONVENIENCE - No batteries needed—just supply power to the reader and unlock effortless operation.
BUILT TO BRAVE EXTREMES - Crafted with high-temp resistant, anti-aging resin and stainless steel for unmatched durability.
COMPACT ROBUST DESIGN - Sleek 16x56mm black handle with gold-plated core ensures reliability in any environment.
INSTANT ACCESS ZERO WAIT - Experience lightning-fast read times under 5 milliseconds—because every second counts.
UNIVERSAL SECURITY STANDARD - Powered by the globally accepted 64-bit TM1990A chip—no restrictions, just seamless integration.

The YARONGTECH DS1990A-F5 iButton is a rugged, read-only electronic key featuring a corrosion-resistant black handle, high-temperature resistant resin, and a unique 64-bit serial number. Designed for rapid identification in under 5ms, it operates without batteries and fits seamlessly into security patrol, access control, and electronic lock systems worldwide.

Specifications

Operation Mode	automatic
Operating Voltage	3 Volts
Contact Type	Normally Open
Connector Type	Integrated
Brand	YARONGTECH
Terminal	Through Hole
Circuit Type	1-way
Actuator Type	Push Button
Contact Material	Brass
International Protection Rating	IP00
Number of Positions	10
Control Method	Touch
Connectivity Protocol	Wi-Fi
Color	Black
Unit Count	10.0 Count
Number of Items	10
Manufacturer	YARONG
UPC	725350789732
Part Number	DS1990A
Item Weight	1.28 ounces
Package Dimensions	4.02 x 2.01 x 0.04 inches
Item model number	Ibutton
Is Discontinued By Manufacturer	No
Size	16 x 56mm
Shape	Ibutton
Item Package Quantity	1
Special Features	Adjustable Feet
Included Components	Ibutton
Batteries Included?	No
Batteries Required?	No

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.