Find a replacement by catalog number
Siemens KTP400, KTP700, KTP900 and KTP1200 Basic panels
Compare second-generation KTP Basic panels by PN or DP connection, display, panel opening and WinCC Basic requirements. Compare the complete article number and offered-unit evidence before ordering.
Before choosing a replacement
Check PN and DP variants
The reviewed KTP700 DP and KTP1200 DP articles use a combined RS-422/485 interface without an industrial Ethernet interface. The reviewed PN articles have Ethernet. Preserve the complete order number.
Measure the panel opening
KTP400 Basic uses a 124 × 100 mm opening; KTP1200 Basic uses 310 × 221 mm. Compare mounting depth, orientation and temperature limits as well as screen size.
Define the offer and required evidence
Send the complete model, quantity, destination and required date. Specify acceptable condition, included accessories, actual-unit photos and required checks. Price, supplied contents and dispatch timing are confirmed in the written quote.
Manufacturer reference: Siemens exact-article technical data for 6AV2123-2DB03-0AX0. Model specifications and their manufacturer sources are linked on each product page. Reviewed 2026-09-13.
SIMATIC HMI Basic, 2nd Generation model list
1 documented model. Select a model for specifications and a quote request.
6AV2123-2DB03-0AX0
Siemens 6AV2123-2DB03-0AX0 KTP400 Basic key and touch HMI
What to include in your enquiry
Send the complete catalog number, quantity, destination, acceptable condition and required delivery date. Include the required hardware series, firmware and accessories if these matter to your installation. Condition, actual unit photos, test information, price and dispatch timing are confirmed for the quoted unit.
Read the used HMI panels buying guideWhat we verify before a quote
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Request SIMATIC HMI Basic, 2nd Generation parts
Send one model or a parts list with your requirements. Pricing and current supply details are confirmed on the quote.