- Mounts on low-profile six-inch diameter base<br>- Easy head removal for cleaning and servicing<br>- Available in 135°F (57°C) or 190°F (88°C) fixed settings<br>- Optional latching alarm LED<br>- Tamper-resistant locking base<br><br><b>D254 Fixed-temperature (135°F [57°C]) Heat Detector Head</b><br>Fixed‑temperature (135°F [57°C]) mechanical heat detector head for use in 12 VDC or 24 VDC nominal circuits; requires a base. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-226-8046, indicating validated use in U.S. government and defense logistics supply chains.
| phase | SINGLE |
| material | PLASTIC DOME |
| quantity | 2 |
| corner_shape | SQUARE ALL CORNERS |
| current_type | AC |
| usage_design | TROPICAL SERVICE |
| condenser_type | HERMETICALLY SEALED |
| dispenser_type | COUNTER TOP |
| overall_length | 1.7450 INCHES MINIMUM AND 1.7550 INCHES MAXIMUM IN |
| voltage_rating | 115.0 VOLTS NOMINAL |
| frequency_rating | 60.0 HERTZ NOMINAL |
| special_features | DISPENSER, BEVERAGE |
| NSN | 4320-00-226-8046 |