TKM7K DC/DCC Model Railway Track Voltage Tester - Hornby HM7000

About the Product

The BLOCKsignalling TKM7K is an advanced DC/DCC model railway track voltage tester, designed to quickly identify voltage drops, poor rail connections, polarity issues and overvoltage conditions. Six built-in LED indicators provide an immediate visual indication of track voltage simply by placing the tester directly onto the rails.

Unlike a basic track power indicator, the TKM7K displays a series of voltage thresholds from 6V to over 21V, making it easy to compare different areas of a layout and identify sections where the track voltage is lower or higher than expected.

The tester also provides an indication when DCC is present or DC track polarity is reversed, providing additional information when diagnosing model railway electrical problems.

The TKM7K is particularly useful for Hornby HM7000 layouts, while also being suitable for general testing and fault finding on both DC and DCC model railway systems.

Key Features

• Advanced model railway track voltage tester.
• Suitable for both DC and DCC layouts.
• Six built-in LED voltage indicators.
• Indicates voltage thresholds from 6V to over 21V.
• Helps identify track voltage drops.
• Helps locate poor rail connections and electrical faults.
• Indicates the presence of DCC track power.
• Indicates reversed polarity on DC layouts.
• Provides an overvoltage warning.
• Particularly useful for Hornby HM7000 layouts.
• Simply place directly onto the rails to take a reading.
• No separate power supply required.
• No setup or programming required.
• Compact and easy to use for layout fault finding.
• Contact spacing suitable for Z, N, TT, HO and OO gauge track.
  

Track Voltage Indication

The TKM7K uses six LEDs to provide an immediate visual indication of the voltage present on the track:

• 6V: Yellow indication.
• 9V: Yellow indication.
• 12V: Yellow indication.
• 15–18V: Green indication.
• Above 21V: Red overvoltage indication.
• DCC / reversed DC polarity: Additional red indication.

This makes it easy to move around a layout and compare the available track voltage at different locations without repeatedly connecting a conventional multimeter.

Hornby HM7000 Layouts

The TKM7K is particularly useful for Hornby HM7000 model railway layouts, providing a quick way to check track voltage at different locations around the layout.

By moving the tester around the track and comparing the LED indications, voltage drops caused by poor rail joints, inadequate track feeds or wiring problems can be identified quickly.

DC & DCC Layouts

The TKM7K can be used on both DC and DCC powered model railway layouts.

On a DC layout, the additional red indicator can identify reversed track polarity. On a DCC layout, the same indicator provides confirmation that DCC is present.

The contact spacing is suitable for Z, N, TT, HO and OO gauge track, covering a wide range of popular model railway scales.

Ideal for Fault Finding

The TKM7K provides a quick way to investigate common model railway electrical problems, including:

• Voltage drops around the layout.
• Poor rail joints or track connections.
• Inadequate or faulty track power feeds.
• Intermittent locomotive operation.
• Unexpected DC track polarity.
• Checking for the presence of DCC.
• Excessive track voltage.
• Checking track power on Hornby HM7000 layouts.

Simply place the tester at different locations around the layout and compare the LED indications to help narrow down the source of an electrical problem.