The SOLT SM3-33PN (cataloged under KT Automation SKU KTI0401200333PM) is a centralized, wall-mounted wireless calling receiver engineered to handle high-density call traffic across demanding commercial and industrial environments. Operating across the 433 MHz / 434 MHz frequency band with FSK/GFSK modulation and 360-degree omni-directional reception via an external dipole antenna, the unit supports registration of up to 1,000 distinct wireless transmitters. Its high-visibility 3x3 FND red LED display shows three simultaneous active calls, each consisting of up to three alphanumeric characters (letters, numbers, hyphens, and blanks). Combined with 22 selectable alert melodies and a 9-step digital volume adjustment, the receiver delivers clear visual and acoustic telemetry across multiple operational sectors.
Hospital and Healthcare Nursing Station Monitoring
In clinical wards, specialized healthcare facilities, and nursing care stations, the SM3-33PN functions as a dedicated nurse call display console. Paired wirelessly with SOLT SB-series call points located at patient bedsides, lavatories, or examination rooms, the unit provides nursing personnel with immediate notification of patient assistance requests. When paired transmitters require coin cells or internal batteries (they are not included), the SM3-33PN operates continuously via its included AC 110–240V to DC 12V (1A) power adapter.
The 3-digit by 3-display FND architecture allows station coordinators to track up to three active patient calls simultaneously without display queue clipping. Administrators can assign specific chimes out of the 22 available melodies to distinguish urgent emergency lavatory pulls from standard bedside requests, while the 9-step volume control permits lower acoustic levels during night shifts and heightened output during daytime operations.
Manufacturing Plants and Industrial Assembly Lines
On industrial factory floors and production lines, the SM3-33PN serves as an operational call and machine fault annunciator console. Line operators utilize paired wireless push buttons to signal workstation bottlenecks, raw material shortages, supervisor assistance requests, or automated machinery stoppages. Because the display supports custom alphanumeric formatting (including digits, English letters, dashes, and underscores), call IDs can be customized to mirror specific plant layouts, such as line identifiers ("L-1"), press stations ("P03"), or maintenance codes.
In large industrial facilities or multi-bay plants where metal infrastructure may obstruct wireless paths, the receiver integrates directly with SOLT SR5-BPR RF repeaters to maintain signal integrity over extended factory perimeters. System administrators can program user-set call display durations, chime repetition intervals, and cycle times for overlapping calls directly via the on-device system menu to match standard shift escalation workflows.
Hospitality and Commercial Food Service Dispatch
In commercial kitchens, casual dining establishments, and high-volume restaurants, the receiver operates as a waiter dispatch and guest management terminal. Mounted centrally in service staging zones, the console alerts floor staff instantly when orders are prepped at the chef's panel or when table-side call buttons are triggered by patrons.
Application Deployment Overview
| Facility Environment | Primary Call Trigger | Display Role (3x3 FND) | RF & Sound Configuration |
|---|---|---|---|
| Hospital Nursing Stations | Patient bedside and emergency lavatory transmitters | Shows bed, room, or ward identifiers across 3 visual call fields | Configurable chime intervals, 9-step volume for day/night acoustic control |
| Factory Production Floors | Machine stoppage buttons and supervisor paging points | Annunciates machine cell, conveyor bay, or station fault codes | High-volume melody assignment; extendable via SR5-BPR repeaters |
| Hospitality & Dining Venues | Table service call buttons and kitchen expediter panels | Tracks waiter requests and order collection queues simultaneously | Over-the-air ("by air") transmitter registration for dynamic layout changes |
