| PartNumber | AI-4228-P-SP28 | AI-4228-P-SP28D-R | AI-4228-P-SP28D |
| Description | Audio Indicators & Alerts 12VDC 2800Hz 88dBA | Audio Indicators & Alerts 12VDC 2800Hz 90dBA | Audio Indicators & Alerts 12VDC 2800Hz 90dBA |
| Manufacturer | PUI Audio | PUI Audio | PUI Audio |
| Product Category | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| RoHS | N | Y | N |
| Product | Indicators | Indicators | Indicators |
| Sound Pressure Level | 88 dBA | 90 dBA | 90 dBA |
| Tone | Continuous | Pulse | Pulse |
| Frequency | 2.8 kHz | 2.8 kHz | 2.8 kHz |
| Voltage Rating | 12 V | 12 V | 12 V |
| Current Rating | 6 mA | 10 mA | 10 mA |
| Termination Style | Screw | Solder Pin | Screw |
| IP Rating | - | - | - |
| Diameter | 42.5 mm | - | 42.5 mm |
| Mounting | Panel | Flush | Panel |
| Series | AI | AI | AI |
| Brand | PUI Audio | PUI Audio | PUI Audio |
| Product Type | Audio Indicators & Alerts | Audio Indicators & Alerts | Audio Indicators & Alerts |
| Subcategory | Audio Devices | Audio Devices | Audio Devices |
| Dimensions | - | 42.5 mm L x 42.5 mm W x 32.5 mm H | - |
| Height | - | 32.5 mm | - |
| Length | - | 42.5 mm | - |
| Width | - | 42.5 mm | - |
| Height in | - | 1.28 in | - |
| Height mm | - | 32.5 mm | - |
| Length in | - | 1.673 in | - |
| Length mm | - | 42.5 mm | - |
| Width in | - | 1.673 in | - |
| Width mm | - | 42.5 mm | - |