Not Sure Which Hardware Level You Have?

Not Sure Which Hardware Level You Have?

Look for the Black Letter or the Numbered Resistor

By Stephen Bowen

Manager of the DMP Call Center

January 24, 2020

If a Thinline Series keypad is going to support an 1108 Wireless Doorbell Module with a Westminster chime, the DMP Technical Update-0952 says you need "Level J” hardware. What is "Level J" hardware you ask? Great question! On the circuit board of DMP hardware you will either see a handwritten letter or a resistor chip near a square that says "LEV" to identify the hardware level.

Anything that requires a letter level requires that letter or higher. Additionally, once a circuit board has been setup for resistors, letters will no longer be used. This means a resistor level is always higher than any letter level for that particular circuit board.

All resistors will have a number on them. For instance, the previously mentioned technical update says "Level J" is required. If there is a resistor it is automatically newer than the letter. If the resistor says 101 it exceeds the Level J requirement and therefore supports the new feature.

If you have any questions about this, please don't hesitate to email me at SBowen@DMP.com.