تتميز بسهولة تغيير أو عكس وضعية التركيب من التركيب السطحي أو التركيب الغاطس.
| Model | Circuit | Identification Method on Exterior | Temperature Rating | Activation | UL Protected Spacing 10 Foot Ceiling |
| 5601P | Single | None | 135°F (57°C) | Fixed Temperature / Rate-of-Rise | 50 feet × 50 feet (15.24m×15.2m) |
| 5602 | Single | Lettering | 194°F (90°C) | Fixed Temperature / Rate-of-Rise | 50 feet × 50 feet (15.24m×15.2m) |
| 5603 | Single | Lettering | 135°F (57°C) | Fixed Temperature | 25 feet × 25 feet (7.62m × 7.62m) |
| 5604 | Single | Lettering | 194°F (90°C) | Fixed Temperature | 25 feet × 25 feet (7.62m × 7.62m) |
| 5621 | Dual | Lettering | 135°F (57°C) | Fixed Temperature / Rate-of-Rise | 50 feet × 50 feet (15.24m × 15.2m) |
| 5622 | Dual | Lettering | 194°F (90°C) | Fixed Temperature / Rate-of-Rise | 50 feet × 50 feet (15.24m × 15.2m) |
| 5623 | Dual | Lettering | 135°F (57°C) | Fixed Temperature | 25 feet × 25 feet (7.62m × 7.62m) |
| 5624 | Dual | Lettering | 194°F (90°C) | Fixed Temperature | 25 feet × 25 feet (7.62m × 7.62m) |
