SpeedCheck® product update - new hardware: updated programmable controller

This article details an update to the SPEEDCHECK-15/18 controller with a new hardware release: when it occurred, how it works, and more.

Product applicability

The following products are discussed in this article:

  • SpeedCheck: SPEEDCHECK-15 and SPEEDCHECK-18

When did this update occur

Starting in 2021 Q4, all systems above, including replacement SpeedCheck controllers, will receive this new hardware revision. In certain circumstances Carmanah will ship the legacy programmable controller as required.

What software version is required 

The new controller requires SpeedCheck Manager version or newer.

What firmware version is required 

The new controller supports firmware version 10.05 or newer. 

Which radars are compatible

The new controller supports the Houston Radar DR500 and DR600 radars. The Decatur SI-3 is not supported—contact Carmanah for compatible alternative controller.


Radar Model Photo Compatible
Houston Radar DR600 Yes
Houston Radar DR500 (legacy) Yes

Decatur SI-3/SI-2




What has been improved

 The following are a few of the improvements that have been made to new control board:

  • Improved support for third party products

  • Improved LED driver efficiency

  • Improved reverse battery connection protection

  • Faster boot-up procedure

  • Lower power consumption

  • Improved date/time backup to >24hrs when power has been removed—removed replaceable battery coin cells in favor of a capacitor bank

  • Improved interface to radar to support two-way communication via SpeedCheck Manager

  • Removed legacy hardware and replaced with software configuration via SpeedCheck Manager

  • Increased storage capacity for data logging

  • Improved labeling on the circuit board

  • 10-pin serial connector is now keyed and latching

  • Added LED display board nightly test for third party remote monitoring

  • Improved Bluetooth module


With the removal of the coin cell batteries from the previous controller revision, you will now have >24hrs of built-in backup power with the power removed from the system before the date and time will have to be updated via the SpeedCheck Manager software. If you are using this board for legacy systems (2010 Q1 or older) that contain the original LED display boards, you will need to enable 20mA intensity mode via SpeedCheck Manager (otherwise the LEDs will appear significantly dimmer). Contact Carmanah if you are unsure what intensity you should be setting the LED display boards to. You may also refer to this article here regarding changing the LED display board intensity.


With this new revision of controller, you will need to pair with the sign via Bluetooth on the first connection to the sign before establishing a connection within SpeedCheck Manager. See our support article here for more information.

To download the latest version of SpeedCheck Manager, please refer to this article.

The serial cable used for Applied Information/StreetHub applications is not compatible with this controller and needs to be replaced with an updated version. Contact Carmanah for more information.