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Microprocessor-based expanded annunciator to support the 7800 SERIES relay modules for first-out annunciation, sequencing, system or self-diagnostics and troubleshooting.


  • Twenty-six status LEDs.
  • Front panel LED array-arranged to indicate flow of line-voltage through string of limits, controls and interlocks.
  • Selectable current and first-out LED array display status.
  • Twenty-one monitored contact points.
  • Access for external electrical voltage checks.

Product Specifications

Expanded Annunciator
Dimensions (in.)
5 in. wide x 5 in. high x 5 1/4 in. deep with Q7800A Subbase x 6 3/32 in. deep with Q7800B Subbase
Dimensions (mm)
127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B Subbase
Weight (lb)
1 lb 6 oz
Weight (kg)
0.62 kg
50 Hz; 60 Hz (±10%)
Approvals, Underwriters Laboratories Inc.
Component Recognized, File No. MH17367; Guide No. MJAT.
Approvals, Canadian Standards Association
Certified, File No. LR95329.
120 Vac (+10, -15%)
Shipping and Storage Temperature Range (F)
-40 F to +140 F
Shipping and Storage Temperature Range (C)
-40 C to +60 C
Approvals, Federal Communications Commission
FCC Part 15, Class B, Emissions.
Required Components
7800 Series Relay Modules and Q7800A, B Subbases
0.5 G environment
Approvals, Swiss RE
Approvals, Factory Mutual
Report No. 1V9AO.AF.
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