RF Frequency and Transmission Standard Compatibility
The SOLT SB9-2XWH 2-key wireless call button (KT SKU KTI0401200SLTCB) is engineered for full architectural compatibility within commercial and clinical wireless calling systems. Operating across the 400MHz frequency band, the transmitter employs the FSK (Frequency Shift Keying) Low Power Data Transmission Standard. This radio frequency structure ensures robust signal fidelity, minimal packet corruption, and resilience against common industrial electromagnetic interference. With its built-in omnidirectional PCB antenna, the unit broadcasts signals across a full 360-degree coverage pattern, allowing flexible wall-mount orientations without requiring line-of-sight aiming toward system receivers.
To prevent cross-talk, signal overlap, and false triggers in high-density facilities, the SB9-2XWH utilizes unique digital bell addressing selectable from 16 million code combinations. This extensive ID pool enables system integrators to deploy dozens or hundreds of individual calling endpoints within the same facility without signal collisions or address exhaustion.
Compatible SOLT Receiver Hardware
The SB9-2XWH transmitter interfaces seamlessly with SOLT centralized monitors and decentralized mobile paging devices designed for attendant, waiter, and nurse calling architectures. The dual-button interface, comprising distinct Call and Cancel keys, directly maps to the active alerting and local cancellation logic of SOLT receiver software.
- SOLT Central Main Display Receivers: Fully compatible with the SOLT SM3 series digital indicator panels, including models SM3-32PN, SM3-33PC, and SM3-61PC. Signals transmitted from the SB9-2XWH register on these displays with assigned bed, table, or station identifiers, while pressing the Cancel button instantly clears the queue.
- SOLT Mobile Receivers and Wearable Pagers: Directly compatible with SOLT on-site mobile pagers, including the SP5-200 and SP7-100 series wrist watch and belt-pack receivers, providing instant vibration and numerical call dispatch to roaming nurses, technicians, or service staff.
Signal Extension and RF Repeater Compatibility
In facilities with large physical layouts, multistory configurations, or high-density reinforced concrete structures, RF transmission paths on the 400MHz band can experience attenuation. The SB9-2XWH is fully compatible with SOLT RF repeaters. Introducing SOLT signal repeaters regenerates the FSK low-power transmission packet across extended operational distances and vertical floor plans, ensuring reliable message delivery from remote patient rooms, isolation wards, or expansive hospitality spaces.
System Hardware Compatibility Overview
| Equipment Category | Compatible SOLT Model / Series | Operational Role in System |
|---|---|---|
| Central Display Terminals | SM3-32PN, SM3-33PC, SM3-61PC | Centralized call queue visualization, audio chime notification, and status monitoring |
| Wearable / Mobile Receivers | SP5-200 series, SP7-100 series | Real-time alert dispatch to mobile healthcare or hospitality attendants |
| Network Range Extenders | SOLT RF Repeaters | Signal regeneration and 400MHz FSK coverage extension through physical barriers |
| Integrated Call Button | SB9-2XWH (Snow White, IP-68) | Primary dual-state initiation (Call) and cancellation (Cancel) field endpoint |
Power and Ingress Compatibility in Field Deployments
The unit requires 2 coin cells type CR2032 (they are not included) for internal transmission power. Because it is manufactured with an ultra-slim 11 mm profile and an IP-68 water-resistant sealed enclosure, the SB9-2XWH integrates into harsh, wash-down, or sanitization-intensive locations, including wet clinical stations, patient bedheads, and outdoor or high-moisture dining environments. The red LED indicator illuminates on button depression to visually confirm transmission to the user, verifying proper operational link with receiving displays.
