How to Verify Zone State with Voltage Reading on the D4412 & D6412

Issue

What is the proper zone voltage for the D6412, and D4412?

Solution

When using the 3.65k EOL, normal should be 7.7 to 8.6 volts. A short will read below 7.3 volts and an open reads 9.1 or higher.

When using the 2.2k EOL, normal should be 6.3 to 7.3 volts. A short will read below 6.0 volts and an open reads 7.7 or higher.

When using the 1.0k EOL, normal should be 3.8 to 4.7 volts. A short will read below 3.5 volts and an open reads 5.0 or higher.