The SOLT SM3-33PN (cataloged under KT Automation reference KTI0401200333PM and HSN code 85176910) is a centralized wireless paging receiver engineered to integrate into multi-point alert and monitoring environments. The receiver communicates using Frequency Shift Keying and Gaussian Frequency Shift Keying (FSK / GFSK) modulation over the 433 MHz / 434 MHz radio frequency band, achieving 360-degree omni-directional reception via its external dipole antenna terminal.
Transmitter & Call Button Ecosystem (SOLT SB Series)
The SM3-33PN provides native protocol compatibility with the entire ecosystem of SOLT wireless calling buttons. It coordinates seamlessly with multi-button and single-button transmitters across the SOLT SB series, including model lines such as SB3, SB5, SB6, SB7, and SB9, as well as specialized commercial chef transmitter panels. Where paired field buttons or portable alert transmitters require internal coin cells or replaceable batteries (they are not included), the SM3-33PN captures and processes their over-the-air transmissions without physical interface wiring.
Range Extension via RF Repeaters
For large-footprint industrial facilities, sprawling hospital wards, and multi-level hospitality sites where structural concrete or metal machinery attenuates direct RF signals, the SM3-33PN is fully compatible with SOLT signal repeaters, including model SR5-BPR. The repeater captures 433 MHz / 434 MHz wireless frames from distant transmitters and regenerates them to the SM3-33PN display console, extending coverage across complex architectural layouts.
System Capacity and Addressing Compatibility
The internal memory registers of the SM3-33PN support registration of up to 1,000 distinct wireless call button identifiers. The receiver firmware accommodates flexible alphanumeric naming rules, accepting numeric digits, standard English alphabetic letters, hyphens ('-', '_'), and blank character spaces. Call notifications are rendered on the high-visibility red 7-segment FND layout, presenting 3 active digits across 3 call fields simultaneously.
Power and Installation Integration
The SM3-33PN is housed in a wall-mount console (dimensions: 288 mm W x 133 mm H x 40 mm D; weight: 650 g) intended for central dispatch areas, nurse monitoring stations, and factory supervisor locations. The unit interfaces electrically via an external AC/DC power supply adapter accepting an input of AC 110–240V and delivering a dedicated DC 12V, 1A output. Programming is executed over-the-air ("by air" wireless pairing), allowing consecutive batch ID learning, individual chime assignment across 22 melodies, and complete system ID wipe routines directly from the console interface.
Hardware Compatibility Matrix
| Equipment Category | Compatible Models / Standards | Integration Method | Functional Role |
|---|---|---|---|
| Calling Transmitters | SOLT SB Series (SB3, SB5, SB6, SB7, SB9) | 433 / 434 MHz FSK/GFSK wireless; requires cells/batteries (they are not included) | Patient call, waiter call, machine breakdown, and emergency signaling |
| RF Range Extenders | SOLT Repeaters (e.g., SR5-BPR) | 433 / 434 MHz signal regeneration | Expands RF transmission range across multi-story or high-density structures |
| Central Console Power | Included AC/DC external power adapter | AC 110–240V input to DC 12V, 1A barrel jack | Continuous operational mains power supply for display receiver |
| Antenna System | SOLT External Dipole Antenna | Dedicated antenna terminal mount | 360-degree omni-directional RF reception on 433 MHz / 434 MHz band |
