The Simplex 6310-9221A is the current-revision synchronized replacement clock for Simplex facility clock systems. The “A” suffix denotes the latest production revision of the original 6310-9221, and this unit is also cataloged under the new part number U54BAAA332.
This 12" round clock replaces aging or damaged Simplex synchronized clocks without any changes to your existing wiring or master clock infrastructure. Simply remove the old unit and install the 6310-9221A — it connects directly to the Simplex synchronized clock signal and resumes accurate, facility-wide timekeeping immediately.
- Part Numbers: 6310-9221A (original) / U54BAAA332 (current replacement SKU)
- Dial Size: 12" round
- Face: White with black numerals
- Signal Type: Synchronized (Simplex master clock system)
- Mount: Standard wall/surface mount
- Application: Schools, hospitals, airports, commercial facilities
- True drop-in replacement — no rewiring or system changes required
The Simplex 6310-9221A is the trusted choice for facility managers maintaining Simplex clock systems across multi-building campuses and large institutions.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 3 lbs |
|---|---|
| Dimensions | 12 × 12 × 4 in |
| Part Type | Clocks, Mount, Round, Surface, Sync, Wired |
| Compatible Panels | Simplex Time Control Center |
| Operating voltage | 110 VAC/60 Hz (85-130 VAC) |
| Correction voltage | 110 V/60 Hz |
| Current | 25 mA @ 110 VAC |
| Dimensions | 12&Prime, round |
| Case | Black ABS |
| Crystal | Shatter-proof polycarbonate |
| Connector | Molex |
| Mount | SlimLine surface |
| Temp | 32-120°, F |
| Humidity | 95% non-condensing |
