Matrix Orbital VK204-25 Legacy - Manual (Page 14)

Figure 13: USB Header
Table 2: Power Requirements
Standard
Supply Voltage +5Vdc ±0.25V
Supply Current 50 mA (Backlight Off)
Backlight Current 185 mA (Backlight On)
WARNINGS
• Do not apply any power with reversed polarization.
• Do not apply any voltage other than the specified voltage.
2.5 Serial Header
The LK202-25-USB also offers an alternative, Serial Header option to permit serial communication with
the device. Please note the the display normally does not come with the Serial Header, it will have to be
ordered as a custom. Please talk to your sales representative if you would like this option.
NOTE This component is optional and must be custom ordered
2.6 General Purpose Outputs
A unique feature of the LK204-25-USB is the ability to control relays and other external devices using
a General Purpose Output, which can provide up to 20 mA of current and +5Vdc from the positive side of
Matrix Orbital VK204-25-USB 10