Wireless Ecosystem Architecture
The SOLT SB9-3XWH wireless calling transmitter (KT reference: KTI040120SLTWCS) is engineered for full architectural interoperability across the genuine SOLT wireless hardware ecosystem. Operating on frequency-shift keying (FSK) low-power data transmission standards within the 400 MHz / 433 MHz radio frequency spectrum, the device transmits digitally encoded control packets via an integrated 360-degree omnidirectional internal PCB antenna. This standardizes signal distribution across on-premise receiver hardware without channel cross-talk or frequency drift.
The 3-button interface generates dedicated digital identity codes corresponding to Call, Drink, and Cancel functions (2 call functions and 1 cancel function). These distinct RF status signals ensure seamless protocol interpretation by upstream receiving endpoints, enabling automated workflow handling across hospitality floor staff, corporate office meeting attendants, and healthcare care-station personnel.
Compatibility with SOLT Receiver Displays and Mobile Pagers
The SB9-3XWH integrates natively with SOLT receiving endpoints without requiring external protocol translation bridges, interface converters, or secondary signal gateways. Supported receiver equipment includes:
- SOLT SM3 Series Digital Display Receiver Boards: Centralized numeric and alphanumeric display panels designed for wall mounting or counter placement in nurse stations, kitchen dispatch counters, or host stands. The SM3 series interprets the 3-button multi-code transmissions to display table or station IDs alongside active service status codes (call or drink requests) and immediately flushes the active alert upon receiving the corresponding cancel payload.
- SOLT SP7 Wrist Watch Pagers: Mobile wearable digital receivers worn by service attendants, floor servers, and technical staff. The SP7 receiver decodes incoming 400 MHz / 433 MHz FSK alerts to deliver immediate haptic and visual notifications with station identification and specific call/drink attributes.
- SOLT SP5 Wrist Watch Pagers: Compact wearable paging receivers engineered for roving staff, supporting direct message logging and real-time operational status updates directly from SB9-3XWH transmitter units.
Range Extension and Signal Propagation Compatibility
For installations where building layouts present dense structural barriers, such as thick reinforced concrete walls, interior elevator shafts, or multi-level architectural footprints, the SB9-3XWH transmitter is fully compatible with SOLT SR5 wireless range repeaters. The SR5 unit captures omnidirectional 400 MHz / 433 MHz FSK signals transmitted by the transmitter's internal PCB antenna and re-broadcasts them at extended range, eliminating packet loss and maintaining total signal integrity between caller buttons and receiver displays.
System Hardware Interoperability Matrix
| System Hardware Component | Model Compatibility | Integration Role and Operational Interoperability |
|---|---|---|
| Digital Master Display | SOLT SM3 Series | Receives and visualizes concurrent Call, Drink, and Cancel requests on centralized numeric display boards. |
| Wearable Staff Pagers | SOLT SP7 & SOLT SP5 | Decodes localized 400 MHz / 433 MHz RF transmissions for roving attendants via personal wrist pagers. |
| RF Range Extenders | SOLT SR5 Repeaters | Amplifies 360-degree omnidirectional transmissions through concrete walls and across complex facility zones. |
| Power Source Interfacing | CR2032 Coin Cells | Powered independently by replaceable CR2032 coin cell batteries (they are not included) without hardwired electrical feeds. |
Mounting and Physical Infrastructure Compatibility
Because the SB9-3XWH transmitter operates completely cable-free with an ultra-compact footprint measuring 74 mm (W) x 46 mm (L) x 11 mm (H) and an approximate weight of 28 grams, it requires no cutouts, electrical conduit, or structural modifications. The IP68 water-resistant white plastic casing integrates effortlessly into hospitality tabletops, dining counters, conference desks, bar tops, or vertical wall mount locations using double-sided industrial adhesive pads or dedicated mechanical mounting base accessories. Autonomous operation using CR2032 coin cell batteries (they are not included) ensures that transmitter deployment does not interfere with existing electrical circuits or building management system (BMS) wiring infrastructure.
