iButton Readers

The iButton Readers fall into two categories:

General Purpose Readers - These work with any iButton, Thermochron or otherwise along with many 1-Wire devices. These iButton readers typically have more 3rd party software options. Guidance is available for selecting a general purpose iButton reader for your needs.

Specialized iButton Readers - These iButton readers are dedicated to specific applications or iButton models. These units offer better performance in specific applications. Specialized Reader options include:

Thermochron Server - The TC-SERVER enables the Thermochrons and Hygrochrons to be missioned and downloaded using standard web browsers allowing smartphones, tablets, Windows PC, Macs, and Linux computers to access the data. It can also be configured to automatically push collected logger data via FTP or HTTP POST.
TDHC400 - This handheld iButton downloader designed to simplify the collection of Thermochron and Hygrochron logger data. Download the iButtons in seconds by touching the TDHC400's probe to the logger, the LEDs will then indicate a completed download, and then move on to the next Thermochron.
PIR2 (limited distribution) - This legacy offering is designed to record iButton serial numbers along with a time stamp. Its compact pocket friendly design makes it well suited for guardtour applications.

View iButton Readers Comparison Table

iButton Readers Comparison Table

A brief overview of key iButton Reader specifications.

Part Number	iButton Models Supported	Writes to EPROM iButtons	Software Support	Stores Data within Reader	Protocol / Connector	Requires Power Supply
DS9490B#	All	No	1-Wire Viewer & Thermodata Viewer	No	USB (Type A)	No
DS9490R#	All	No	1-Wire Viewer & Thermodata Viewer	No	USB (Type A)	No
DS9097U-E25#	All	Yes	1-Wire Viewer & Thermodata Viewer	No	RS232 (DB25)	Yes, when writing to EPROMs
DS9097U-009#	All	No	1-Wire Viewer & Thermodata Viewer	No	RS232 (DB9)	No
DS9097U-S09#	All	No	1-Wire Viewer	No	RS232 (DB9)	No
TC-SERVER-ENET-2	Thermochrons & Hygrochrons	No	Any Web Browser	Yes	Ethernet (RJ45)	Yes
TDHC400	Thermochrons & Hygrochronsl	No	TDHC Manager	Yes	USB (Mini)	No

Products (Total Items: 9)

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DS9097U-009# - RS232 1-Wire Host Adapter with ID

$43.73

In Stock

DS9097U-E25# - RS232 1-Wire Host Adapter

$136.20

In Stock

DS9097U-S09# - RS232 1-Wire Host Adapter w/o ID

$42.50

In Stock

DS9490B# - USB 1-Wire / iButton Adapter

$47.88

In Stock

DS9490R# - USB to 1-Wire / iButton Adapter

$43.95

In Stock

PIR2 - Personal iButton Serial # Recorder (Limited Distribution)

$80.95

Not for Sale

ROMWriter - iButton ROM ID Writer

$98.95

In Stock

TC-SERVER - Thermochron Server

$155.95

In Stock

TDHC 400: Handheld Thermochron Downloader

$180.00

In Stock

General Purpose Readers

Questions to Consider:

Does the software support the specific adapter? - All of the PC based iButton software packages sold by EDS support the general purpose readers.
Do you need to use RS232 instead of USB? - If yes, look at the DS9097U options. Go with a DS9490 adapter option otherwise.
Do you prefer to insert the iButton directly into the adapter or is a cable prefered? - The DS9490R# and DS9097U adapters have any RJ12 jack compatible with the DS1402 cable line. The DS9490B# can have an iButton inserted directly into it.
Will you be working with an "Add-Only" memory like the DS1982? - There are a number of iButton and 1-Wire chips that require a higher voltage to write to the Add-Only/EPROM memory. Examples include the DS1982 and DS1985. The DS9097U-E25# must be used to write to Add-Only memory, but any general purpose reader can read the Add-Only memory's contents.
Do you need a ROM ID (serial number) for the iButton Reader? - The DS9097U-S09# model doesn't include a ROM ID unlike the other general purpose readers.

Part Numbers:

DS9490B# - USB iButton Reader with iButton (F5 size) Holder.
DS9490R# - USB iButton/1-Wire Reader.
DS9097U-009# - RS232 iButton/1-Wire Reader with ROM ID.
DS9097U-S09# - RS232 iButton/1-Wire Reader without ROM ID.
DS9097U-E25# - RS232 iButton/1-Wire Reader with ROM ID and "Add-Only" memory writing ability.